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- Foam Flower-Tiarella cordifolia Hardy Planting Zones- 4-8 Sun or Shade – Partial Sun to Full Shade Mature Height - 12-18" Mature Width- 12-18" Bloom Season – Spring (May-June) Gardener Status- Beginner
Foam Flower – Tiarella Cordifolia
Foam flowers are perennial foliage plants that grow in woodland areas. Foam flowers come in a variety of colors and are shaped sort of like toy rockets at the tip. The flowers stem from the short green foilage, which is slender and star-shaped. For the past 15 years, many species of new cultivators have been created and made more easily available to gardeners.
Foam flowers are generally very low maintenance plants and prefer a soil balance of pH 6.2-6.5 for best results. They often go undivided for years without losing much of their energy. Most of the time, it’s not even necessary to cut them back when they start to look tattered as foam flowers usually rejuvenate on their own. They’re generally insect resistant. However, black vine weevils, mealybugs, or slugs can infest and kill the plant if they’re not watched. They’re also generally avoided by animals until wintertime.
Foam flower plants are generally sterile to their own species so gardeners who want a lot of them will have to plant at least two different species. They usually grow in the summer and will need to be given about six weeks before their pods turn brown and split open. Then they will need another 30 days after that to germinate. Dried seeds can be store for up to a year. Foam flowers generally last about two years with their first year being spent producing offsets on stolons to produce more of the flowers. During the second year, the offsets produce their own roots. Then by the third year, they will need to be pulled, root and all and replaced.
Foam flowers also grow very well in shade garden containers. They need drained mixes with only a little fertilizer. Make sure that they’re well-watered in the summer and protected from cold winds during the colder seasons. The potted ones may need to be stored next to a cold frame for their first year.
It features lobed evergreen leaves, with most varieties growing in clumps. With its dainty, lightly scented flowers, it makes an ideal accent plant or groundcover. In the fall, blooms fade and foliage reveals itself with hues of autumn color. This charming plant is low maintenance and attracts birds and butterflies. Makes an excellent starter garden for children as it grows well in containers and maintains visual interest all year long.