These are some prototypes for making a sprouted surface.
Here is how I made the prototype in the top two photos:
Grow Time: 7 - 10 days Typically, the seeds begin to sprout in 2-3 days. It takes a minimum of 7 days for the seeds to fully mature. Once they are mature, they last for about 7 days. If you want to have them ready for a specific date, I recommend starting 8-9 days ahead of that day.
Materials:
Thin, lightweight plywood Handy Pantry seed germination mats Cress seeds Staples (and staple gun) Water Spray bottle
Steps:
1. Soak the cress seeds overnight or for a few hours. Soak approximately 1 part seeds 3-4 parts water. Better to err on the side of less than more because you can always add more water. The seeds will form a gel around them and should be thick like pudding.*
2. Staple the seed germination mat on the wood. It should be stapled on the back but cover the front. First, staple one side to the back, then roll it up over the side of the wood, across the front, down the opposite side, and staple the other side to the back.
3. Gently wet the seed germination mat. It will puff up when you wet it. If it gets hit with too hard of a spray of water you can put a hole in it. Ideally, try to wet it with a faucet that disperses the water, a shower head, or a spray bottle (that sprays a lot of water so it doesn't take forever to wet it), or just don't turn your faucet on all the way.
4. Spread the seeds on top. Make sure to spread them evenly and spread them along the sides.
5. Set the seeds in a place that is out of the wind and gets indirect sunlight. It would be a good idea to put plastic under the seeds if they are on a wood table. Wind will cause the seeds to dry out.
6. Spritz the seeds with a spray bottle 2-4 times per day, soaking them to keep them moist.
7. The seeds will begin to sprout in a few days. They will be fully mature in about 7 days. After they are fully mature they will last for 7 days. On about day 5 or 6 I will usually put them in a window or area with more light.
* Sometimes the seeds can off gas a pungent smell during the sprouting process. My hypothesis is that this smell increases the longer they are soaked, so soaking them for only a few hours may reduce the smell. An alternate method to try could be, rather than soaking the seeds, wetting the pad first and then covering the pads with dry seeds which, in theory, should absorb the water and begin to grow.
SOURCES FOR MATERIALS: You can buy the Handy Pantry seed germination mat on either of these sites: - www.wheatgrasskits.com/micro-mat-hydroponic-grow-pad - Handy Pantry Etsy Site
The cheapest source I have found for bulk cress seeds are: http://www.sprouthouse.com/SearchResults.asp?Search=cress For large surfaces I would order a minimum of 1 pound. I haven't calculated the quantity of seeds needed for surface area coverage, but I would roughly estimate that 1 pound of seeds can cover 4'x4' to 8'x 8', potentially larger.
ATTRIBUTIONS: This method was inspired by the Chia Pet, costumes from the performance What is Enough? (2012) and a method theater technicians used to make large letters at the Kampnagel Summer Festival in Hamburg, Germany (2012).








