Species royal fern Guide

royal fern

Osmunda regalis 'Purpurascens'

Cycle:

Perennial

Watering:

Frequent

Propagation:

Spore Propagation

Hardiness Zone:

3 - 9

Flowers:

Non-flowering Flowers

Sun:

Filtered shade, Full sun only if soil kept moist, Part sun/part shade

Soil:

Loamy Humus

Fruits:

purple Fruits In Summer Ready In Fall

Leaf:

Yes

Leaf Color:

red,purple

Growth Rate:

High

Maintenance:

Low

Care Level:

Medium

watering

Royal ferns should be watered once a week with 1-2 inches of water. Keep the soil evenly moist but not soggy. During periods of low rainfall or extreme heat, increase watering to twice a week if necessary. When you water, water thoroughly into the root zone so that moisture reaches 6-8 inches down. After watering, allow the top 2-3 inches of soil to dry before watering again.

sunlight

Royal ferns prefer moderate to full shade but will grow in a range of light conditions. They ideally need 4 to 6 hours of direct sunlight per day during the spring and summer, and slightly less in the fall and winter. In low light conditions, their fronds may become yellow or even brown. Direct sunlight should be avoided during the hottest parts of the day (noon to 3 PM). If possible, try to place the fern in a spot that receives filtered, indirect sunlight throughout the day.

pruning

Royal fern should be pruned in early spring just as new growth begins to appear. Prune off any old, dead fronds and any that are no longer upright and healthy. Depending on the size and health of the fern, you may prune to remove up to 3-quarters of the fronds, as new fronds will soon grow to replace them. Avoid pruning royal fern too severely, as it may weaken the plant and can leave it vulnerable to a pest or disease attack.