Tiarella are hardy perennial woodland plants that range from 30 to 60 cm in height.
They have heart shaped green leaves that change in colour to red in the autumn.
Tiarella plants come into bloom from late in spring through to early summer, when they carry feathery white flowers on spikes.
A common name for Garden Tiarella is the Foam Flower.
Tiarella (Foamflower) by Matleena Laakso.
The seeds of the Foam flower should first be grown in flats, and they can be sown in either the autumn or spring; seeds should be sown on the surface. If planting in flats in the autumn then sink the flat in a shady area and cover in glass; keep soil moist; bring indoors for the winter when it starts to get very cold.
If growing Tiarella plants in the spring then first imbibe the seeds by putting the flat in a black bag, then placing in the fridge for three weeks. Next sink the flat into a shady part of the garden, cover with glass and keep moist. Once young foam flower seedlings appear remove the glass and allow to grow in situ; transplant the seedlings to their final location in the autumn.
The Tiarella plant can grow in either shady or partially shaded areas and likes a cool acidic soil (pH 5 to 6), that is rich, well drained, and moist.
The plants should be spaced from 15 to 20 cm apart (small Tiarella) to 30 to 60 cm apart (larger varieties).
It is fairly easy to look after Foam Flowers and other Tiarella, they are woodland plants so like a cool moist soil; so apply a wood chip mulch to help maintain soil moisture and coolness, and water regularly. If you require more plants then they can be propagated by division in the spring.
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