P. These plants can either be grown in several inches of rich, loamy soil at the bottom of a sunny pool or in a wicker basket filled with loam and a little well-rotted cow manure. The basket is sunk into the water which should be about 15 in. deep. Running water is not advisable. Plant in May and leave undisturbed. Increase by division in May. The rosy-pink James Brydon and the scarlet-crimson Escarboucle are good varieties.