Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.
It checks today's price at every store, compares the alternatives and answers in about a minute.
TAPDRA's rock wool blocks are small round cubes of compressed rock wool, about 1.06 by 0.78 inches, sold in a pack of 100. They are made for soilless seed starting: soak them in nutrient solution, sow, and transplant the seedling with the cube still around the roots. The open, porous structure holds water while letting air reach the roots, which is the same job peat pellets and starter plugs do. They suit growers raising many seedlings at once, hydroponic setups and anyone who wants to skip soil at the germination stage.
In stockSold by ChuanyueReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
Store links may earn us a commission.
Lowest price we've seen: $8.99 on Nov 15 at Amazon. Tracked across 1 store since Nov 15.
These rock wool blocks are compressed into small round cubes for soilless planting and seed starting. The material has a low bulk density, a light texture and high porosity. It lets air through, absorbs water well and drains well.
To use, soak a block in nutrient solution, then sow seeds that have been disinfected and soaked. When the seedlings reach 15 to 25 cm, they can be transplanted into soil together with the block. Stop watering 3 to 7 days before transplanting so the block is dry, then water 2 to 3 days after transplanting.
The blocks suit all types of plants and can also be used for seedling production in field cultivation and in factory production with vegetable soil cultivation. This method is stated to shorten the seedling age by 3 to 5 days and raise yield by more than 10%.
