Systems and methods of growing plants from seeds include the use of composite sheets to retain and distribute seeds during germination. These composite sheets are referred to herein as “seed quilts.” The seed quilts may be used to grow seeds in a tray-based system having standing water or in a hydroponic system including flowing water. For example, the seed quilts may be used in a tray of appropriate dimensions, a vertical growing system with plumbing configured at steep angles up to 90° or consisting of stacked horizontal levels, or a growing system comprised of complex surfaces. The seed quilts may be used in soil-based applications if suitable watering and drainage practices are used.
The seed quilts include at least two sheets of material. These sheets represent different layers and are bonded together at selected locations in order to produce a plurality of pockets between the sheets. Prior to bonding, seeds are placed in the locations of these pockets. As such each pocket when completed includes a predetermined exact or approximate number of seeds depending on the application. The seeds are held within the pockets by the bonding process. A desired distribution of seeds across the entire seed quilt is thus obtained. The size of each of the pockets is selected such that the volume between the sheets can expand a desired amount during the sprouting process. These pockets are referred to herein as “seed cells.” In various embodiments, the seed quilts provide a number of advantages, such as reduced cost, consistent and appropriate distribution of seeds, humidity and moisture control, pathogen mitigation, waste mitigation, easy planting and harvesting, light control, and the ability to germinate and grow horizontally, vertically, and at other non-horizontal angles.
Various embodiments of the invention include a seed quilt comprising: a grow substrate; optionally seeds; a seed cover; and bonding regions at which the grow substrate is attached to the seed cover and configured to form one or more seed cells in which one or more seeds are contained, the seed cells having sufficient space for the seeds to germinate and sprout.
Various embodiments of the invention include a kit comprising: a seed quilt a grow tray; a fiber mat; and a spacer. Various embodiments of the invention include a method of making a seed quilt, the method comprising: receiving a grow substrate; adding seeds to the grow substrate; covering the seeds with a seed cover; and bonding the grow substrate to the seed cover to create seed cells in which the seeds are confined.
Seed quilts include at least two layers referred to herein as a “seed cover” and a “grow substrate.” In use, the grow substrate is typically placed facing the water source and is not exposed to light and the seed cover is oriented such that it is exposed to ambient light or a light source. The seed cover and the grow substrate are connected at attachment points or bonding regions to form seed cells configured to each hold one or more seeds. The seed cover and grow substrate may be connected at the attachment points using glue, thermal bonding, an adhesive layer, or any other method appropriate for the materials. In some embodiments, the attachment points are selected by pressing the seed cover and grow substrate together at the attachment points using a press. This produces a laminated structure at the attachment points.
Placement of the seeds within the seed cells results in more control over distribution of the seeds, relative to a system that did not include one or more seed cells. The seed cover and grow substrate also reduce the amount of light received by the seeds in the seed cells, relative to ambient light. For example, the seed cover optionally has an opacity selected to create a light level better for the germination of seeds, relative to ambient light, e.g., daylight. Placement of the seeds within the seed cells may also be used to control humidity in the environment of the seeds. For example, the grow substrate may be configured to allow transfer of a limited amount of moisture into the seed cell. This moisture may come from water placed at the bottom of a grow tray. The control of moisture transfer may be based on porosity of the grow substrate, thickness of the grow substrate, component material of the grow substrate, and/or the like. Humidity within the seed cells is also controllable by selecting such properties for the seed cover. For example, while the grow substrate controls entry of moisture into the seed cell, the seed cover controls transport of moisture from the seed cell. The seed cover is optionally made of a hydrophobic material. Both the seed cover and the grow substrate can each include multiple layers of materials. Seed cells can include growth assisting or enhancing materials like soils, fertilizers, microbes, pH buffering substances, humidity and moisture control elements, biochar, coffee grounds, sawdust, agar, growth media, fungi spores, seeds, and/or the like.
The seed cover, grow substrate and attachment points are optionally further configured such that the volume of the seed cell can expand as the seeds germinate. This expansion in volume is referred to herein as “puffing” because the seed cell can appear to expand as growing sprouts push on the seed cover. During puffing the parts of the grow substrate and seed cover (that are not included in the attachment points) separate from each other. The puffing can be used as an indicator that the seeds are germinating. Puffing can result in the merging of seed cells as the seed cover and grow substrate separate. This merging is referred to herein as “ballooning.”
After an initial growth stage, the seeds are typically ready for more light and a change in humidity. This change can be obtained in several ways. In some embodiments the seed cover is configured to be separated from the grow substrate manually. For example, a user may peel the seed cover off of the grow substrate manually, or a machine may be used to pull off the seed cover. Alternatively, the sprouts may push the cover aside as they grow taller without a user or machine removing the cover. Alternatively, in some embodiments the seed cover is configured to break in response to pressure exerted by the growing sprouts. The seed cover may be thus configured by appropriate selection of material, thickness, strength of the bonding between the grow substrate and seed cover at the attachment points, and/or scoring or perforation of the seed cells.
The change that occurs when the growing sprouts break through the seed cover simulates emergence of the germinating plants from soil to daylight. The Seed Cover 400 provides reduced light, increased humidity, and pressure on the seeds during the initial growth stage. The selection of which approach (manual or breakthrough) is used to expose the plants to the change in light and moisture is optionally dependent on the type of the plants and the density of the seeds. For example, approximately 100 cabbage seeds in an approximately 2 9/32″× 27/32″ seed cell are preferably exposed through seed quilt ballooning and manual removal of the seed cover, while approximately 100 basil seeds in an approximately 2 9/32″× 27/32″ seed cell typically require manual removal of the seed cover after seed cell puffing but before seed quilt ballooning. Approximately 50 radish seeds in an approximately 2 9/32″× 27/32″ seed cell typically puff the seed cell and then break through the seed cover at stress points along the attachment points, rather than through ballooning of the seed quilt and manual removal of the cover. The selection between manual separation and breakthrough separation is also optionally dependent on the application in which the plants are grown. For example, a seed quilt designed for a home user might be designed for ballooning and subsequent manual seed cover removal because more user involvement is fulfilling and increases feelings of ownership and nurturing. On the other hand, another type of home user may prefer a seed quilt designed for breakthrough without manual intervention such that no intervention is required. It may be preferable for seed quilts designed for use in larger scale commercial growing systems to be designed for ballooning and peeling of the seed cover all in one piece, whether manually or robotically, such that ripped seed cover pieces do not get lost among the plants or in the plumbing.
In various embodiments, the seed cover comprises wax, parchment, or other treated or untreated papers, plastic films, light blocking or spectrum filtering materials, fabrics, and/or the like. In various embodiments, the seed cover layer may be less than 0.3, 0.1, 0.07 or 0.04 millimeters thick, or have a size within any range between these values. The seed cover may also be thicker than 0.3 mm or thinner than 0.04 mm. In various embodiments, the seed cover is configured to block at least 10, 25, 50, 75 or 100% of visible light. In various embodiments, the grow substrate comprises plant based or synthetic materials, such as hemp, plastic fibers, a combination of plastic and natural fibers, paper, cotton, and/or the like. The grow substrate layer may be less than 1, ½, or ¼ inches thick, or any range there between. The grow substrate may also be thicker than one inch.
There are several alternative ways in which a seed quilt can be used for germinating seeds. For example, a seed quilt may be placed in a tray with a static water source or may be placed adjacent to a flowing water source. Flowing water sources may be present in both horizontal and non-horizontal (e.g., vertical) growth orientations.
The seed quilt may be placed on a support structure or directly on the same surface that supports/contains the water. For example, the seed quilt may be placed directly on the floor of a tray or a surface of a flow channel of a hydroponics system. Alternatively, the seed quilt may be placed on one or more spacers configured to distance the seed quilt from the floor/surface. The spacer may be configured to merely position the seed quilt, and/or further configured to transport moisture or to determine the amount of standing water that can act as the reservoir as in the case of a system with a static water source. The taller the spacer, the more water that can be held in the “reservoir.” In various embodiments, the seed quilt is used or provided in combination with a plastic, glass, glazed ceramic or metal spacer. In various embodiments the spacer may be equipped with electronic sensing, mechanical linkages or attachments, or visual aids meant to convey information about the growing plants, or conditions of the tray such as water level.
If a spacer is not used, then water is typically added to the seed quilt periodically. This is to avoid overwatering of the seeds which can delay or inhibit germination entirely as well as promote unwanted bacterial growth. Water is added to the tray periodically as the seeds germinate and the resulting sprouts grow, soaking up the water available.
In some embodiments, the seed quilt is used/provided in combination with a fibrous and/or plant based spacer. For example, seed quilts may be supported by a mat including coconut fiber. The coconut fiber serves to both position the seed quilts and to transport moisture. The coconut fiber may provide a better environment for root growth, relative to plastic or metal spacer. Coconut fiber also may provide transport of water to the seed quilts. For example, a coconut fiber may be configured to move water from a reservoir to the seed quilts. Specifically, a coconut fiber mat placed at the bottom of a tray can transport water to a seed quilt for an extended period. This is desirable behavior because it minimizes the likelihood of overwatering the seeds. The thickness and/or density of the coconut fiber are optionally configured such that the tray need only be filled with water once, until the desired time to harvest. Because the coconut fiber transports moisture, roots of the sprouts receive sufficient water as they grow through the coconut fiber, even as the water level decreases as a result of evaporation and consumption. In this approach, the initial level of the water may be just below the seed quilt. As the seeds germinate, sprout, and grow, consuming water, the water level in the grow tray falls. Less often, or perhaps only an initial, watering is needed. The growing system is typically configured such that the roots grow through the grow substrate into the coconut fiber mat and further into the plane of the spacer, meaning the roots will have contact with the water level wherever it may be or if not, have access to water through the moist coconut fiber mat. A fibrous spacer, such as the coconut mat, may also be configured to allow airflow around roots of the sprouts resulting from the seeds.
In some embodiments, both a passive spacer (e.g., plastic grid) and an active spacer capable of transporting water (e.g., coconut or other plant fiber) are used in combination. The active spacer is generally placed on top of the passive spacer. When used with a passive spacer, the coconut fiber spacer may be thinner relative to systems that do not include a passive spacer.
Seed quilts are optionally used in non-horizontal geometries. For example, a seed quilt can be hung against a surface on which water periodically flows. This surface may be an (approximately) or precisely vertical wall or a tilted wall. The water may be transported and/or circulated via pumps and/or gravity and/or wicking or capillary action. The use of a seed quilt on a non-horizontal surface may or may not include use of active or passive spacers as discussed elsewhere herein. The use of a seed quilt in a vertical growing system typically results in root growth along the plane of the grow substrate, rather than through the grow substrate, which still anchors the plants in a desirable manner.
Seed quilts optionally include features configured to facilitate draping or hanging or fastening. For example, a seed quilt may have a centered region of attachment points that allow the seed quilt to be draped over a rod or wire. This region of attachment points is optionally wider than other regions of attachment points that separate seed cells. In another example, a seed quilt may have a region of attachment points on one or more edge that is wider than other regions of attachment points that separate seed cells. The wider regions facilitate attachment of clips or placement of holes through which hanging hooks or pegs can be placed. When draped or hung seed quilts may be watered from the device over which they are draped or from an external spray.
Mats 200 may be made of materials other than coconut fiber. For example, Mats 200 may include fibrous or non-fibrous materials, organic or inorganic materials, in addition to or instead of coconut. Mats 200 are optionally treated with antiseptic substances or processes or antifungal substances before use. Mats 200 optionally contain substances such as nutrients or fertilizer to enhance the growing of Plants 700. The height of the coconut fiber Mat 200 plus the height of a passive spacer depending on the application determines the amount of Water 710 preferably added when starting growth of a Seed Quilt 300. A thicker coconut fiber Mat 200 allows more Water 710 to be initially added, and therefore the user doesn't have the replenish the water as frequently if at all during the growing process.
In some embodiments, Seed Quilts 300 are provided without seeds. In these embodiments, slits or other perforations are included in the Seed Cover 400 such that a user can add their own seeds. In some embodiments, the Seed Cover 400 is perforated for easy tearing such that it is easier for Plants 700 to break through. Seed Quilts 300 and Seed Cells 500 may take a wide range of alternative geometries. For example, Seed Cells 500 may be square, round, rectangular, hexagonal, pentagonal, etc. Seed Quilts 300 can be treated as a textile and used in such applications as fashion or interior design. Seed Quilts 300 can be planted on soil or used in hydroponic, aeroponic, or aquaponic applications and other growing techniques.
As illustrated in
The force of the growing Plants 700 causes the Seed Cover 400 to separate from the Grow Substrate 800 (not visible) below the Seed Cover 400. As a result, Seed Cells 500 begin to balloon and merge. The Bonded Regions 520 have been significantly reduced. In
As illustrated by
Seed Quilts 300 can be designed with and without perforations in the Seed Cover 400 over the Seed Cells 500. When perforated, the Plants 700 more easily tear open the individual Seed Cells 500 as they grow. When the Seed Cells 500 are not previously perforated, the growing plants push against the Seed Cover 400, delaminating the Seed Cover 400 from the Grow Substrate 800 and causing ballooning. In this case, individual Seed Cells 500 disappear and once the Seed Cover 400 is detached from the Grow Substrate 800, with the exception of the perimeter of the Seed Quilt 300, the user can remove the cover and expose the plants to air and light. If the user waits longer to remove the Seed Cover 400, the sprouts may continue to push against it, beginning to detach the perimeter of the Seed Cover 400 from the Grow Substrate 800 as well. Even if the Seed Cells 500 are not previously perforated, the Seed Quilt 300 can be configured such that sprouting plants break through the Seed Cover 400 by creating stress along the attachment points or by piercing through the Seed Cover 400 entirely.
The Roots 900 differentiate into air roots and water roots. The air roots are more delicate and “fuzzy.” These Roots 900 form above the Water 710 level. The water roots are in contact with the Water 710 and provide Water 10 to the Plant 700 and also pull some oxygen, out of the Water 710. For the growing system described, the air roots provide oxygen for root respiration and the water roots transport Water 710 to the Plant 700. The Roots 900 that are above the Water 710 and in the coconut fiber Mat 2 are referred to as “air roots” and the roots in the pooled Water 710 are referred to as “water roots.” The fibers of the coconut fiber Mat 200 are loosely enough packed such that air can get in easily, this allows the Roots 900 to get a good supply of oxygen, lowering the likelihood of mold or bacterial outbreaks.
Other embodiments of Growing System 510 can include different vertical or horizontal systems of a wide variety of alternative designs and styles. These systems can include materials other than those shown. Further, other elements such as moisture sensors, water control systems, and lighting may be included. Consumer and/or Commercial scale systems may be computer controlled and include internet enabled and/or wireless sensing devices.
The Contour Framework 1523 can be any size or shape as long as it is possible to water the Roots 900 or wet the Grow Substrate 800. Seed Quilts 300 can be draped, clipped, and attached chemically or mechanically to the Contour Framework 1523. The Contour Framework 1523 can come with extra parts like string or rubber bands to attach the Seed Quilts 300 to the Contour Framework 1523 or for making the Seed Quilts 300 wearable. The Contour Framework 1523 can sit above a Water Reservoir 1111 instead of a Drip Tray 1524, especially if there is a recirculating irrigation system. The growing system comprised of a Contour Framework 1523 can be used with an artificial light. This growing system might have customizable parts, such as the wireframe face, which could be made by the user in order to customize the features or expression. The Contour Framework 1523 could have attachments for a banner that is decorated and attached for customization. The Contour Framework 1523 can move passively like a mobile or actively like a robot. The Contour Framework 1523 could also be electronic, be interactive, or monitor environmental conditions and report them to the user. Water 710 can be sprayed onto either of the Seed Quilts 300. Excess Water 710 dripping from the Seed Quilts 300 will be caught by the Drip Tray 1524.
In a Receive Substrate Step 1810, Grow Substrate 800 is received. The received Grow Substrate 800 can include any of the materials discussed elsewhere herein. In various embodiments Grow Substrate 800 is received as a flat sheet or as a roll of material.
In an optional Distribute Seeds Step 1820, Seeds 600 are distributed on the Grow Substrate 800. The Seeds 600 may be distributed semi-randomly such that they may be present at any point on Grow Substrate 800, or may be distributed primarily to locations at which Seed Cells 500 will be located. One or more types of seeds may be distributed together.
In an Apply Seed Cover Step 1830, a Seed Cover 400 is applied over the seeds. The Seed Cover 400 optionally includes perforations configured to make it easier for Plants 700 to break through. The applied Seed Cover 400 can include any of those Seed Covers 400 discussed elsewhere herein. The optional Seed Cover 400 perforations or slits in the case of a blank seed quilt can be made in the Seed Cover 400 before or after the Attach Step 1840.
In an Attach Step 1840, the Grow Substrate 800 and Seed Cover 400 are attached at Bonded Regions 520. They may be attached using an adhesive, heat, chemical bonding, stitching, stapling, and/or the like. For example, in some embodiments the Grow Substrate 800 and Seed Cover 400 are attached using a press having contact points in a pattern of the Bonded Regions 520. This press may be heated. In some embodiments, Attach Step 1840 is performed using a roll-to-roll system to produce a continuous strip of Seed Quilt 300. In this case, the Seed Quilt 300 may be cut into desired sizes after production. The produced Seed Quilt 300 includes Seed Cells 500, optionally containing Seeds 600. As discussed elsewhere herein, the Seed Cells 500 are configured to retain the seeds during transport and the initial germination stage. The resulting Seed Quilt 300 is optionally perforated along Bonded Regions 520 to facilitate separation of one or more Seed Cells 500 from the Seed Quilt 300. These perforations can penetrate both the Grow Substrate 800 and the Seed Cover 400.
The methods illustrated by
In a Receive Tray Step 1910, a Grow Tray 100 is received. In an optional Add Spacer Step 1920 one or more Spacers 1610 are placed in the Grow Tray 100. In an optional Add Mat Step 1930, one or more Mats 200 is placed in the Grow Tray 100. Note that the Spacers 1610 and Mats 200 can be placed in any order as needed for a specific purpose.
In an Add Quilt Step 1940, a Seed Quilt 300 is placed in the Grow Tray 100, on top of any added Spacers 1610 and Mats 200.
In a Water Step 1950, Water 710 is added to the Grow Tray 100. The Water 710 may be added so as to fill the Grow Tray 100 up to approximately the top of any Spacers 1610 or Mats 200 therein. The Seed Quilt is typically pressed down upon in order to ensure the Grow Substrate has sufficiently absorbed Water. It is typical to check that no water pools on the top of the Seed Cover. If water has pooled on the top of the Seed Cover, it is typical to pick up the soaked Seed Quilt, quickly tilt to drain the pooled water on the Seed Cover, and carefully place back into the Grow Tray such that no more water will pool on the Seed Cover. If necessary, some water can be emptied from the Grow Tray to ensure that pooling on the Seed Cover does not occur.
In an Uncover Step 1960, the Seeds 600 are uncovered. This may occur either mechanically by removal of the Seed Cover 400 (by machine or hand), or may occur by having the growing Plants 700 break through the Seed Cover 400.
In a Harvest Step 1970, the Plants 700 are harvested. This may be accomplished using a sharp edge such as scissors or a cutting blade. In some embodiments, the Plants 700 are harvested using automated equipment. The Plants 700 may also be harvested manually or by automated equipment by pulling on the Plants 700, which may result in some or all Plants 700 being harvested with Roots 900 still attached.
Several embodiments are specifically illustrated and/or described herein. However, it will be appreciated that modifications and variations are covered by the above teachings and within the scope of the appended claims without departing from the spirit and intended scope thereof. For example, some embodiments of Seed Quilts 300 are configured for use at large scales, e.g., for commercial farming or erosion control. When used outdoors, Seed Quilts 300 protect seeds from animals and provide a good growing environment on unstable or difficult soils. Such applications may use larger sizes of Seed Cell 500, relative to those discussed above. Outdoor applications such as erosion control may require a Seed Quilt 300 configured to break down within a certain timeframe after it has fulfilled its purpose. The Seed Quilt 300, namely the Grow Substrate 800, can be designed to break down by bacterial or chemical additives that are introduced during manufacturing of the Seed Quilt 300 or applied in situ at any time. While the Seed Quilts 300 illustrated herein are configured for growing microgreens, in alternative embodiments Seed Quilts 300 can be configured for growing other biological materials including other plant types, plant clones, seaweed and fungi. For example, Seed Quilts 300 are optionally inoculated with mushroom spores rather than including seeds.
The embodiments discussed herein are illustrative of the present invention. As these embodiments of the present invention are described with reference to illustrations, various modifications or adaptations of the methods and or specific structures described may become apparent to those skilled in the art. All such modifications, adaptations, or variations that rely upon the teachings of the present invention, and through which these teachings have advanced the art, are considered to be within the spirit and scope of the present invention. Hence, these descriptions and drawings should not be considered in a limiting sense, as it is understood that the present invention is in no way limited to only the embodiments illustrated.
This application claims benefit of and priority to the following U.S. Provisional Patent Applications: 62/393,566 filed Sep. 12, 2016; 62/401,861 filed Sep. 29, 2016; 62/424,383 filed Nov. 18, 2016; 62/426,498 filed Nov. 26, 2016; and 62/517,176 filed Jun. 9, 2017. The disclosures of these provisional patent applications are hereby incorporated herein by reference.
Number | Date | Country | |
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62393566 | Sep 2016 | US | |
62401861 | Sep 2016 | US | |
62424383 | Nov 2016 | US | |
62426498 | Nov 2016 | US | |
62517176 | Jun 2017 | US |