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AeroGarden Compatible Grow Sponges (50 pack)


AeroGardens are a great way to grow at home. Yet, existing sponge options but existing sponge options are both expensive and of mediocre quality. Urban Leaf’s coco-coir based AeroGarden-compatible replacement sponges work perfectly with all AeroGarden models – offering an affordable, sustainable, and high-quality alternative to the ‘genuine’ option for your AeroGarden.

  • Refill your existing plastic plugs from Urban Leaf to save buying an entirely new kit.
  • Simply remove the plant from its bottle, clean all parts with water, insert replacement Smart Soil inserts and you’re ready to grow again!
  • Replacement Pod Kits will set you back $10-15 a set. Purchasing the sponges and plastic pieces separately is a great way to save money on your AeroGarden.
  • We also offer a dwarf and compact herb seed collection thats great for indoor gardening.

Additional information

Weight 0.3 lbs
Dimensions 4.75 × 9.50 in

We sought to make a more eco-friendly replacement to the standard (peat moss) based Aerogarden sponge, so we created this one out of sustainable, organic, coco-coir.

Included in this kit

Includes replacement pods.

Not included, but required

Does not include green plastic inserts. Use inserts from previous kit, a bottle, water, and seeds for setup!


0.5 lbs


2.50 × 4.75 × 9.50 in

Refunds & Returns

All Urban Leaf products are backed by our Green Thumb Guarantee (we want more than anything to make a successful gardener out of you!) If you are not satisfied with our products, or cannot get them to work, please contact us for a refund or replacement.

6 reviews for AeroGarden Compatible Grow Sponges (50 pack)

  1. Hayley (verified owner)

    PLEASE NOTE! This is a great product at a great price, but it’s not exactly a 1-1 replacement since coconut coir has its (unadvertised) challenges. I had issues with Calcium + Magnesium deficiencies in the majority of my plants, though at the time I didn’t realize it. A lot of my tomato starts were damaged early on (which makes them struggle throughout the season) and by the end of the summer some of the leaves were cobalt blue in patches! After a little research, I found out coconut coir tends to hold onto calcium, magnesium and iron, so my plants weren’t receiving enough of those nutrients, which doomed them from the start. If you’re planning to grow or start seeds using these, you will need a supplement like Botanicare Cal-Mag Plus to add in addition to your usual nutrients. I just wish I knew this before I got them!

    • Nate (verified owner)

      Thanks for the comments Hayley! These plugs are pretty small in terms of volume, and I would expect that it wouldn’t take long for the roots of your tomato plant to grow through them, directly into your reservoir of hydro solution. This being the case, it seems to me that for a mature plant the coco coir substrate would be effectively ‘bypassed’ in terms of the flow of nutrients from the water, through the roots and into the plant. If so, I’d expect the composition of the blogs to be irrelevant by that point. Appreciate the thoughtful comments and we don’t doubt that this problem could exist for larger pieces of coir, however I wonder whether there may have been a different cause in this instance…?

  2. Barbara K. Byers

    Work with Aero Garden! These pods work perfectly with the Miracle Grow Aero Garden and are so enexpensive!

  3. Lori Kiely-Dicus

    They work well unless mold grows. I will continue to use them to start seeds. I use the product to plant seeds in my aerogarden

  4. Emil E. Kackos

    I like these. I like that they are biodegradable. They are the same size as the regular pods, fit the plastic holders perfectly and also fit in the styrofoam seed starting system. I planted lettuce seeds in one and they came up in a few days. A perfect fit for me!

  5. kim

    Much cheaper than the companies product. Works the same. Great deal. Like growing my own plants at great price

  6. zPug

    I have 4 Aerogarden Bounty, 8 Aerogarden Harvest (includes classic touch, Elite Wi-fi and just Harvest) indoor to grow cherry tomatoes, bell peppers, herbs, different kind of veggies and flowers. I used a lot of seed pod sponges as I mainly use organic seeds I bought from nursery. I had thrown away quite a lot of original Aerogarden seed pod sponges because of mold growing on the sponge. Saw this replacement sponges on Amazon which claimed that it won’t grow mold so give it a try.

    1. this sponges are softer than Aerogarden sponges, which is very nice.
    2. Easy for soaking water, I usually soak the sponges in water before I placed seed into the sponge, this replacement sponges take less than a minute to fully soaked with water.
    3. They all in good shape. I bought a package of Aerogarden sponges from their official website, they arrived in different length, and shapes, many of them were broken, or curved. See attached photos for compare.
    4. No mold, I started using the sponges on 6/26/2019 to start some seeds, although my seeds didn’t sprout because it’s too old, at least 5 years old, I had replaced seeds two times, the sponges still looking good without mold. It does have algae on top because of the light, but it’s not mold which I had them on my other original Aerogarden sponges.

    I also using these sponges to start growing chamomile, romaine lettuces, cilantro and baby bok choi. My chamomile sprouted in just 5 days.

    Will definitely buy these replacement sponges again in the future when I used up all my sponges.

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