100 Pack Grow Sponges, Replacement Root Growth Sponges Seed Pods,Seed Starter Plugs for Hydroponic Indoor Garden System
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
15 left in stock
Arrives
Tuesday, Nov 18
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Size: 1.1" × 1.7"(Soaked)
Features
- Perfect Match: The soaked grow sponge (approx. 1.1" 1.7" WH) is compatible with LAPOND hydroponic systems and other similar products, but not compatible with Aero Garden or iDOO. Please check dimensions before purchase.
- High-Quality Seed Starter Plug: Crafted from premium peat, these plant plugs feature excellent shaping and strong water-wicking capacity. They deliver optimal oxygen-water balance for seeds, fostering robust root growth.
- 100 Pack: You will get 100pcs replacement grow sponges,Enough hydroponic sponges can allow you to start hydroponic planting of multiple plants at the same time, which greatly saves your time.
- Grow What You Love: Ideal for seeding, cuttings, and plant propagation, it suits both hobbyists and commercial growers. It can grow a variety of plants such as strawberries, tomatoes, peppers, cilantro, basil, and flowers. Being soil-less and clean, it brings the feeling of spring indoors all year round.
- Easy to use: Soak the hydroponic grow sponges for about 5 minutes. Gently squeeze the sponge until there is no dripping. Put 2-3 seeds in the hole. Then place the sponge in the basket and wait for germination.
Material: Peat
Color: Gray
Style: Modern
Planter Form: Plant Pot
Shape: Square
Material: Peat
Color: Gray
Style: Modern
Planter Form: Plant Pot
Shape: Square
Indoor/Outdoor Usage: Indoor
Mounting Type: Tabletop
Product Dimensions: 1"D x 0.7"W x 1.5"H
Brand: LAPOND
Number of Pieces: 100
Pattern: Solid
Finish Type: Unfinished
Number of Levels: 1
Item Weight: 0.29 Kilograms
Set Name: Grow Sponges
Size: 1.1" × 1.7"(Soaked)
Item Weight: 10.2 ounces
Manufacturer: Siyan
Item model number: No
Date First Available: November 14, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 1.1" × 1.7"(Soaked)
These are the cheapest hydroponic sponges I've found on Amazon and the quality is excellent. I use them in my tower garden system and they hold seedlings securely while allowing good root development. Bought in bulk and glad I did. They fit perfectly in standard net pots and the material is durable enough to reuse after cleaning. Germination rates have been consistently good across lettuce, herbs, and microgreens. One caution: they do collect algae quickly, especially if exposed to light. I now cover the top layer with opaque material which solved the problem. Easy to rinse and sanitize between uses. For the price per unit when buying larger quantities, these can't be beat. Way more economical than buying small packs from hydroponic specialty stores. Stock up if you run a tower system.
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Reviewed in the United States on October 5, 2025 by Shella
Size: 1.1" × 1.7"(Soaked)
Its the exact size for lapaond system
Reviewed in the United States on August 16, 2025 by Waleed Alsulaimani
Size: 1.1" × 1.7"(Soaked)
Moving from using countertop hydroponic gardens, I purchased a tower system. They contain peat and the diameter of these sponges fits perfectly into the square net pots which came with the system, so I purchased a bag of 100 – after all I reasoned, what could go wrong?! Other than one sponge which was planted with spinach, which began to grow but a couple of days after emerging from the hole enough to see it died, and none of the other seeds I’ve tried to grow in them have germinated at all. All seeds except one variety I’ve been consistently, successfully growing in the sponges which came with my countertop systems, so I know that the seed used isn’t the issue here. With the first group that I planted, I assumed that the zero germination *must be* a fluke, but after trying numerous plantings of various seed varieties and having only one start to grow, then quickly die, it seems my hopes for these sponges were misplaced. Cannot use, nor recommend this product.
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Reviewed in the United States on September 20, 2025 by HoldingFeetToTheFire HoldingFeetToTheFire
Size: 1.1" × 1.7"(Soaked)
They actually work better than the sponge ones. It fits in the lettuce grow outdoor container.
Reviewed in the United States on August 1, 2025 by Sara Mitran
Size: 1.1" × 1.7"(Soaked)
Love these. Expensive way to start seeds but the germination and survival rate is really good.
Reviewed in the United States on July 20, 2025 by Rebecca M
Size: 1.1" × 1.7"(Soaked)
These sponges are extremely solid. I expected them to expand and degrade but they pretty much retained their shape through germination all the way to final planting, and a couple actually popped out of the ground during a strong rain along with the plant. The photo is of a plant that has been in the ground months. Granted, something else is going on as the plant is NOT growing .. I clearly don't have a green thumb, so I don't know if I'm doing something wrong. Very confusing.
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Reviewed in the United States on September 16, 2025 by D.H D.H
Size: 1.1" × 1.7"(Soaked)
Smaller than expected
Reviewed in the United States on November 5, 2025 by Javier
Size: 1.1" × 1.7"(Soaked)
Excelente
Reviewed in the United States on July 24, 2025 by Peter