Start and Grow Seedlings Indoors - AeroGarden Seed Starting System - Universal
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AeroGarden Seed Starting System For AeroGarden 7 and 7 LED Models


Availability: In stock

Quick Overview:

Start up to 50 seedlings indoors in the AeroGarden 7 or 7 LED models, then easily transplant them outside. (more...)


This new and improved Seed Starting System will allow you to start up to 50 seedlings indoors in your AeroGarden 7 or 7 LED with no dirt and no mess, then easily transplant them into your outdoor garden when weather allows. The new and improved design provides more room for each plant which promotes healthier root development and makes removing and transplanting seedlings easier than ever. The AeroGarden nurtures your seeds with optimal amounts of water and plant food, and provides plenty of light and warmth for reliable germination and healthy growth.

The system comes with a re-usable foam seed starter tray, biodegradable Grow Sponges that are ready for seed, plant food and a Seed Starting & Transplanting Guide.

Overview and Benefits:

  • Includes the supplies you’ll need to start your seedlings inside (seeds not included)
  • Our Grow Sponges are made from pure Canadian Sphagnum Peat and provide soil-free, no-mess, indoor growing all year-round


Seed Starting System includes:

  • One re-usable foam seed starter tray
  • 50 Biodegradable Grow Sponges
  • One 3 ounce bottle of our Specially Formulated Liquid Plant Food
  • Seed Starting & Transplanting Guide



Customer Reviews

Review by Laura
The styrofoam fits nicely into my ultra model but the holes were too big, most pods fell right through. I had to use a tweezer to pull them out. I let the pods soak before putting them into the holes (hoping they would swell enough to stay in the styrofoam). Worked for some, not others...I planted my seeds so like I said, we'll see what happens. :-) (Posted over a month ago)
Review by Rosanne
I've used my 7 for winter salads for a while now, and love it. Greens in the interior of Alaska in winter are pretty sad. This will be first use of the seed starting system. It would be hugely useful to have an online or downloadable executable tray map and log. I'm using the paper one in the instruction book, but sure would like one on my computer!
Great product, though. (Posted over a month ago)
Customer Service Response:
Great suggestion! We'll work on adding that to our 'Guides' section. Thank you.
Review by Susan
I like this product for quick-germinating seeds precisely because the styrofoam floats on the water and the sponges stay near the top of the tray; this means the seeds aren't as shaded as they are in the pods of a regular Aerogarden or even in the new plastic seed-starting tray. I like it even more for starting cuttings, though, because the moist sponge needs to be pressed against the cutting for it to "take," and the styrofoam is very good at holding everything in place. I've grown three batches of petunias from cuttings using this tray, which have successfully moved on to pods in my other Aerogardens; I've also rooted snapdragons, decorative sweet potatoes, and even a winter apricot (prunus mume). I give it a 4-star rating because it is difficult to judge the water level in the garden with the tray in place, and also difficult to add water unless you leave one hole open. Also, the sponges do get very wet--more wet than the soil in seed-starting systems moistened with capillary matting--which means anything susceptible to root-rot needs to be moved into regular soil fairly quickly--the snapdragons more or less stopped growing after their roots emerged from their sponges, for example. If you aren't careful to sanitize the tray and bowl properly, you can also have damping-off and fungus gnats, but that's true for any seed-starting system. I've had no signs of either problem. (Posted over a month ago)
Review by Theresa
I used the seed kit to get a jump on spring and summer plants, and it did very well. I only had two problems, which would be easily remedied. First, the AG grows the plants too fast! I started my seeds based on the dates on the back of the seed packets, but they were growing faster than the weather was warming up, so in the future I'll wait another week or two past the suggested start dates. And the second issue was algae. It may have been because I used the seed tray for about 1.5 months straight through for seeds starting at different times, but even flushing the water out every two weeks I was getting tons of algae build up because the seed tray doesn't block light form the water. In the future I'll make a little tin foil hat for the AG to block light around the edges and in unused seed holes. (Posted over a month ago)
Review by Sally
I have been using the seed starters for 5-6 years now and am a big fan! Where I live, we can have a rather short growing season, so being able to get such a big jump on the starts is wonderful....If you find your starts are " sticking" in the tray when it's time to transplant, try pushing with a pencil etc. from the bottom...easy peasy! (Posted over a month ago)
Review by Gillian
It's only reading these reviews that I now know to do a rinse and refill after 2 weeks. I was a bit concerned that there's no circulation of the water and it has collected a number of moths that love the light but end up in the water. I did go back through the directions and did not see it mentioned (Posted over a month ago)
Review by Gillian
5days planted and already action in the tomato area. Can you post a PDF of the map of which seed is which so I can enlarge it? (Posted over a month ago)
Review by Alexis
Ok so far so good. I got it as a gift ( I asked for it) So far works great .I did find this , the sponges that come with have a small hole in the center that you COULD just put most seeds in. But I found that if after the sponge is soaked it is better to take the sponge out and VERY CAREFLLY split in and then out the seeds in. ( so the seeds are not showing.) I used my fingers but if you pull to hard it will rip ( you can still use it just have to hold it together when putting it back in the hole.. so far most of my seeds sprouted ( the ones that haven't i blame the seeds ( some were a little old but thats because I keep everything) I started some seeds about 3 weeks ago and they already have true leaves ( second and third sets) I might have to pot them bafore I plant them if this weather doesn't get better ( I'm in NY) I have tow units so I statred them about two weeks apart . If they grow as good in the garden as they are now I will have a great year . ( This only my second year of vegitable gardening. ) BUT remember these sponges are biodegradable so BE GENTAL with them. As far as sponges swelling ( they are they swell , if you put a toothpick in the side you can squeese out the water and gentally poke they from the bottom to get them out) As far as the instructions maybe they were left out of your box but I think a 5 YO could set it up. (Posted over a month ago)
Review by Morgan
I have a Aero 6 and 7 and love them both want to get one of the new ones next. I use them to get a quick start on plants as I will start about 2000 seeds this year. Then use them with the reg. tops for winter fresh food. (Posted over a month ago)
Review by Sandra
so easy to use and works great!!! Got my garden off to a great start!!! (Posted over a month ago)
Review by James
Is the tray styrofoam? Is it reusable? Does it fit the ultra very well? (Posted over a month ago)
Customer Service Response:
Yes, James, the tray is styrofoam, it is reusable (I've had mine for six years) and it fits the ULTRA. Thanks for your interest, but why the one star?
Review by Frank
It works, no doubt about that. I did not like the fact that when I went to transplant the seedlings into my garden the sponges would not come out. The sponges absorbed the water and swelled so they were wedged in and I had to destroy the tray to get them out.

I'm assuming that most people that are buying this are environmentally concise. I would think that there was something other than styrofoam that the tray could be made of that wouldn't take 10,000 years to degrade. Getting the seedlings out I had styrofoam bits flying everywhere not a lot of fun and now I have to figure out another way to start my seeds.

Overall it works as it should but I think some work needs to be done to make it more earth friendly. Also DONT push the sponges in at all or they will not come out! (Posted over a month ago)
Review by Planting Time!
I love this mini hydroponic garden system! I used the universal starter system for some of the most temperamental seeds. I had the most excellent germination rate with my Bhut Jolika pepper seeds. The plants are very healthy and they have developed a strong root system. (Posted over a month ago)
Review by Keli
I've used this to start my garden for the last 3 years and its fantastic! Tomatoes, peppers and all kinds of herbs. Works great! (Posted over a month ago)
Review by GardenGrow
We've successfully used the starter tray. It's not magic, it fits into your Aerogarden, with the lid / removed. The unit fits over the cross posts (at least in our elite 6) and the grow sponges wick up the water. It worked quite well for us, and produced multiple seedlings successfully, which we then transitioned to outside.

I don't agree with "Pissed" review, to be candid. The nutrients ciculate in the water, which is oxygenated, just like it normally would be. As Pissed pointed out, you could get a piece of styrofoam, (cut / shape it, drill holes in it, purchase grow plugs, and nutrients, and make your own.) Personnally, I believe it is easier and less time consuming to use the starter tray. Plus, if you buy it on sale. It's a decent deal and as cheap as starter trays at Walmart or a garden center which require more attention... (Posted over a month ago)
Review by Amy
So yes it is exactly what it looks like: a formed piece of styrofoam that floats in the nutrient solution directly. You're not paying for the value of the styrofoam per se, you're paying for the fact that it perfectly fits your aerogarden and sit right under the light canopy. 66 seedlings is a good amount of seedlings! I have three of these churning out seedlings in spring to fill my garden with cheap annuals. They transplant well into 4" pots once they have roots starting to make their way through the sponge into the nutrient solution. You have to judge when's a good time to transplant them out- you don't want to wait too long, or they seem more shocked when they go out into a pot. I take care of the garden starter trays, soak them in 10% bleach solution crops then rinse well. I fill the nutrient solution bowl with tap water a day before and let it sit so the chlorine evaporates out. I put a few mL of peroxide in my initial nutrient solution. I have never had any problems with damping off. Tomato and pepper seedlings do great upon transfer. Cucumbers outgrow the sponge a bit too quickly. Head Lettuce and kale do well, peas and corn seeds are too big. I mostly use the aerogarden for starting tomatoes, peppers, basil and flowers. (Posted over a month ago)
Review by CookieGirl
I love this Garden Starter Kit. It is an easy way to jump start my outdoor garden here in the northeastern part of the country, where the growing season is short. It worked wonderfully for starting my seedlings last season, and is working just as well this season with new replacement grow sponges.Yes, it is a block of styrofoam, but it is reusable and is made precisely to fit in the AeroGarden. (Posted over a month ago)
Review by Pissed
The product video carefully avoids showing how this is "installed" into the aerogarden. It is placed on top of the water. It floats. No circulation of nutrient fluid. No filter.
It would be as effective and less expensive to use a block of styrofoam with holes cut out... Oh wait. That's exactly what this is. (Posted over a month ago)
Customer Service Response:
Thanks for the critique! However, there's no need to circulate the nutrient solution; the seed sponges wick it up, and once the roots grow out they are pulling nutrients directly from the solution in the reservoir. Every two weeks, you do a rinse and refill to introduce oxygenated water back into the reservoir and to re-balance the nutrients. And the Garden Starter System works!
Review by Seth
Does not fit the Extra. My previous review said Ultra. (Posted over a month ago)
Customer Service Response:
Hi Seth - Sorry you had a problem! No one else has reported this, and we haven't seen it on our plant lab. I wonder if the warehouse sent you a Garden Starter System for the SpaceSaver 6 by mistake. I'll replace your GSS, and we'll see.

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Product Video