The Rivieras are available in nine colors. The trailing Regatta series, which also comes in nine colors, can be used in tubs, window baskets and hanging baskets. The Regattas are early flowering, which enables growers to have containers in full flower for early-spring sales. Sow seed or pellets directly into plug trays filled with a standard plug growing mix. Maintain growing medium temperature at 75F-80F. Do not cover the seed because light is required for germination.
Fine mist is recommended since it minimizes the risk of damage to germinating seedlings.
This helps prevent post-emergence damping off and other fungal diseases. Misting also prevents excessive washing of the seed and seedlings toward the edge of or out of the plug cells. If pelleted seed is used, keep the seed consistently moist until seedling emergence to ensure the pellet dissolves. Once all seedlings have emerged, air temperature can be lowered to 60F. Seedlings can be transplanted into packs or pots five to six weeks after sowing. Plants can be grown at a wide temperature range, but pay particular attention to watering and fertilization.