Duckweed - Sold in Store Only
Duckweed is a very small light green free-floating leafy plant. Duckweed has 1 to 3 leaves, or fronds, of 1/16 to 1/8 inch in length. Duckweed tends to grow in dense colonies in quiet water, undisturbed by wave action. Will provide great cover but can spread and cover rapidly. Simply remove excess plants to thin out as desired. Sold by the cup.