like bill stated most ponds are clay lined , unless you have and older pond with lot muck , the lilies will not do well. like any perennial they require fertilizer to produce the full potential of flowers and plant. again the only way to achive there best growth is to plant in containers and fertilize in the summer months. they need alot of attention to produce great plants, removing dead flowers and leaves when needed. walmart site has great plants and info on planting and care, as do other sites. in containers you can move them in, out, where you want them , some cover 10 to 15 sq feet. can't wait for spring.....
