Cool night temperatures seem to promote flowering. Many species flower in the summer, and putting them outside in the summer may be ideal. Most growers pot in an open medium and water frequently, especially when warm. Dry roots lead to leaf-tip dieback, or a browning of the leaf tip. Watering frequency can be reduced in the winter months, but these plants should never dry out completely.
Most growers fertilize with a diluted concentration every week to two weeks.
Plants grown in osmunda need fertilization only infrequently. Plants that rest in the winter may be repotted in the spring. The best flowerings come from large clumps of plants, so large baskets are usually used. Pre-moisten the potting medium so that the roots do not dry severely after repotting. Vigorous plants may need repotting every three years.