Test for nitrogen, phosphate, potash (the 3 main fertilizer ingredients) and for pH balance, a total of up to 40 individual tests. A very practical science project.

Grow your own peanuts! Guaranteed to sprout in 2 to 4 days. Grows 6" high in 3 weeks with ordinary indoor lighting. Grows for months if transplante...
View full detailsGrow your own collection of feared and famous meat-eating plants. This kit features the infamous Venus Fly Trap. Watch these fascinating plants gro...
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