Tiarella

The genus Tiarella consists of five species. These are perennial herbaceous evergreens, very stable, with a characteristic, rather slow growth, compact. Star-shaped flowers with a white or pink tint are collected in brushes. Tiarella cordifolia is a species that occurs naturally in moist mountain forests. This shoot-forming plant, 15-30 cm high, is particularly well suited as a groundcover crop. The leaves are heart-shaped and separate, more or less light green in color, covered with sparse pubescence. In May-June, white-cream flowers bloom, collected in erect brushes 15 cm long. The variety 'Collina' (some botanists distinguish it in a separate species-Tiarella wherryi, Tiarella wherryi) is a compact plant. Green ivy-shaped leaves have a reddish or brown autumn color. coloring. In the variety "Tiger stripes", the central part of the sawn leaves is brown-dark green. Split tiarella (T. laciniata) grows up to 30 cm in height. This is a root-spreading plant with heart-shaped, deeply divided leaves with a serrated edge. In summer, white flowers bloom. Multi-leaf tiarella (T. polyphylla) is the only species of Asian origin. It grows up to 30-60 cm in height and is a compact root-spreading species. The leaves are smooth, three-divided, with a serrated edge. In summer, white-pink flowers bloom, collected in a 25 cm long brush. Three-leaved tiarella (T. trifoliata) is a root-springing species with a height of 25 cm. Ivy - shaped leaves are collected in 3 together, the central one is three-part, the outer ones are two-part. White flowers bloom in summer. Leaves of Tiarella single-leaf (T. unifoliata) consist of 3-5 lobes, with a serrated edge. On pubescent peduncles, white flowers are formed.

The genus Tiarella consists of five species. These are perennial herbaceous evergreens, very stable, with a characteristic, rather slow growth, compact. Star-shaped flowers with a white or pink tint are collected in brushes.

Tiarella cordifolia is a species that occurs naturally in moist mountain forests. This shoot-forming plant, 15-30 cm high, is particularly well suited as a groundcover crop. The leaves are heart-shaped and separate, more or less light green in color, covered with sparse pubescence. In May-June, white-cream flowers bloom, collected in erect brushes 15 cm long. The variety 'Collina' (some botanists distinguish it in a separate species-Tiarella wherryi, Tiarella wherryi) is a compact plant. Green ivy-shaped leaves have a reddish or brown autumn color. coloring. In the variety "Tiger stripes", the central part of the sawn leaves is brown-dark green.

Split tiarella (T. laciniata) grows up to 30 cm in height. This is a root-spreading plant with heart-shaped, deeply divided leaves with a serrated edge. In summer, white flowers bloom.

Multi-leaf tiarella (T. polyphylla) is the only species of Asian origin. It grows up to 30-60 cm in height and is a compact root-spreading species. The leaves are smooth, three-divided, with a serrated edge. In summer, white-pink flowers bloom, collected in a 25 cm long brush.

Three-leaved tiarella (T. trifoliata) is a root-springing species with a height of 25 cm. Ivy - shaped leaves are collected in 3 together, the central one is three-part, the outer ones are two-part. White flowers bloom in summer.

Leaves of Tiarella single-leaf (T. unifoliata) consist of 3-5 lobes, with a serrated edge. On pubescent peduncles, white flowers are formed.

Cultivation

Plants of the genus Tiarella are grown in the open ground in rock gardens and as groundcover plants under trees and shrubs. They are suitable for any garden soil, including peaty. It is recommended to dig the land thoroughly before planting and apply organic fertilizers (7-8 kg /m2). To loosen too dense soil, add sand. Do not water it abundantly. If the land is not very fertile, then during the spring and summer period, top dressing is carried out once a month - a complex fertilizer is diluted in water for irrigation.

Plants of the genus Tiarella are grown in the open ground in rock gardens and as groundcover plants under trees and shrubs. They are suitable for any garden soil, including peaty. It is recommended to dig the land thoroughly before planting and apply organic fertilizers (7-8 kg /m2). To loosen too dense soil, add sand. Do not water it abundantly. If the land is not very fertile, then during the spring and summer period, top dressing is carried out once a month - a complex fertilizer is diluted in water for irrigation.

Location

Plants of the genus Tiarella prefer a rather shaded place: under trees, shrubs and along houses.

Temperature

These plants are resistant to both high and low (-15 °C) air temperatures. And heart-leaved tiarella and single-leaved tiarella tolerate a drop in temperature to -25 °C.

Watering

It should be regular enough to keep the ground moist all the time, and drainage should be arranged in such a way that water does not stagnate.

Care

Remove faded inflorescences and wilted leaves.

Reproduction

The easiest way is to propagate the plant by dividing the bush in October or April (if the winters are very cold). The resulting parts are immediately planted in a permanent place in the ground. Seeds of multi-leaved tiarella and the 'Holm' variety of heart-shaped tiarella can be sown in March, and then kept in a closed, unheated room. As soon as the seedlings grow up, they are transplanted to a protected place in the garden, and next spring they are planted in a permanent place.

The easiest way is to propagate the plant by dividing the bush in October or April (if the winters are very cold). The resulting parts are immediately planted in a permanent place in the ground.

Seeds of multi-leaved tiarella and the 'Holm' variety of heart-shaped tiarella can be sown in March, and then kept in a closed, unheated room. As soon as the seedlings grow up, they are transplanted to a protected place in the garden, and next spring they are planted in a permanent place.

Diseases

Tiarella is susceptible to fungi, representatives of the genera Cercospora (Cercospora) and Phylosticta (Phylosticta). Both of them lead to the appearance of stripes and spots on the leaves. Treatment with ceneba- containing insecticides helps. Powdery mildew of grapes (oidium) may appear, which forms a white fluffy layer. Produce treatment with drugs designed to combat oidium. Fungi of the genus Sclerotinia (Sclerotinia) - pathogens of white rot, manifested in the rotting of roots and peduncles. Sclerotiniosis can be prevented by paying more attention to watering, and if this is not possible, by treating it with fungicides.

Acquisition

Plants of the genus Tiarella can be found in horticultural centers and specialized nurseries for growing perennial lawn and groundcover plants. Choose compact specimens, without signs of rotting in the root neck area.