To germinate ripe acanthus seeds, soak them in water for a day or two, plant them one-quarter-inch deep in a seed mix, and grow at 50-55°F. They typically sprout in twenty-one to twenty-five days. Seedlings will take two or more years to reach flowering size.

How do you grow Acanthus from seed?

Sow, March-May, in trays or pots of seed compost, ideally in a cold frame or cold greenhouse. When the seedlings reach 2 to 3 true leaves, prick out to larger pots or a nursery bed. Grow on until plants are an established size for up to 2 years, before planting out in final position in autumn or spring.

Can you grow bear's breeches from seed?

They can be grown from seed, but need plenty of warmth to germinate.