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Grow sponges are soilless growing mediums that ensure seeds have just the right environment for germinating. They do so by providing the seeds with adequate amounts of oxygen and water and causing them to sprout.
Can I Really Start Seeds in a Sponge?
Not only can you really start seeds in a sponge, but grow sponges are considered one of the most successful ways to start seeds. When it comes to hydroponics, there is no better method for starting seeds than using a grow sponge.
Attention
1.Size selection of planting pots: Perfectly compatible with LAPOND square and round planting pots,Please refer to the size of grow sponges for other planting pots.
Dry Dimensions:
Top length: 20mm/0.79 in
Height: 23mm/0.9in
Bottom length: 14.5mm/0.57in
Hole diameter: 3.4mm/0.13in
Hole depth: 4.7mm/0.18in
Dimensions After Absorption:
Top length: 25mm/0.98in
Height: 28mm/1.1in
Bottom length: 18mm/0.7in
Hole diameter: 5mm/0.2in
Hole depth: 6mm/0.24in
Sunny jones
Reviewed in the United States on February 25, 2025
Single sponges definitely work well but it’s a lot of moving pieces. It’s be lovely if they came as a perforated sheet.
Customer
Reviewed in the United States on January 28, 2025
IMAGE AND DESCRIPTION NOT ACCURATE. TINY.Much smaller than expected. NOT SQUARE, more of a triangle with very small bottom, so they fall over even in tiny cubes because so much smaller than the cube. Will not repurchase.
ambra
Reviewed in the United States on August 21, 2024
These work great and they are biodegradable, unlike the sponges that most of the growing systems come with.
Roger L.
Reviewed in the United States on June 13, 2024
Bought two different kinds at the same time. The others worked much better.
DIY Theo
Reviewed in the United States on November 18, 2024
These little cubes worked fine for me for starting my lettuce and kale seeds. I soaked them for an hour and then put them in a seed holder with water tray and you can see the results.
Gary sipes
Reviewed in the United States on October 8, 2024
These are tiny should have read the ad better about 1/3 the size I normally get .
C Hays
Reviewed in the United States on October 27, 2024
I really enjoy growing vegetables and other plants hydroponically. I go through a lot of grow sponges, and so this set of 100 pack is a great value. These grow sponges are 2.5 inches and have a pretty deep seed hole, which could also be used for cuttings as well. They have good porosity and water retention. I just got a 50 space hydroponic grower, so I am excited to try these sponges.
Big Steve from Seymour (by Gawd) Texas
Reviewed in the United States on October 12, 2024
If you like this type of grow sponges, you won't be disappointed with these. They are similar to any others I have used. With a bag of 100, I have enough to last a long long time.I use a sharp awl to cut through the sponges from top to bottom without having them fall apart. It gives the seeds a much easier path for their roots.
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