i have a 3000 gallon pond and im looking for an inexpensive plant that will spread along the back of the pond and hide the liner. the Pond is twenty feet long and i want to get 5 small parrot feather plants and plant them along the back. how long will it take for them to spread and cover it?
also, will they grow upwards if i plant them deeper?
also, will they grow upwards if i plant them deeper?