*** the order placed after Monday, the package will be shipped following Monday. Unless upgrade to USPS Priority Mail. YOU WILL GET 30 or more Giant Duckweed plants. They will be packed in a zipper bag and FREE SHIPPING with USPS First Class. Note: They will be gathered from my Tropical Fish/Snail tanks, so they might contain some snail, but we will try our best to remove it. DESCRIPTION Giant duckweed has two to three rounded leaves, which are usually connected. The underleaf surface of giant duckweed is dark red. Giant Duckweed is an fairly fast growing floating plant. It is great to use in aquarium to help prevent algae, provide shade for inhabitants, increase surface area and to reduce nitrates.