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Summer cypress

Bassia scoparia · Amaranthaceae

The gardener's calendar

The right move for September

Ideal time to plant summer cypress: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Deciduous, very fine and feathery, turning scarlet red in autumn
Flowering
Summer to autumn (June to October)
Adult size
60 to 100 cm in height, compact and rounded form
Growth
Very fast, annual
Hardiness
Low hardiness, frost-sensitive (tender)
Origin
Central Asia and China
Soil type
Well-drained, rather poor, tolerates drought

Care

Exposure

Install the belvedere burnished amaranth in full sun to optimize foliage color and compact form. It tolerates partial shade but will be less dense and less colorful. Choose an airy location, as it appreciates air circulation.

Watering

Water moderately during the growing period, especially the first few weeks after planting. Once established, the plant is very drought-tolerant and requires little water. Avoid excess moisture, which promotes rot.

Soil and drainage

Well-drained soil is essential to prevent root asphyxiation. Poor or even chalky soil works perfectly. Over-enriching the soil can reduce spectacular autumn color.

Pruning and maintenance

Pinch back shoot tips at the young stage to promote a more compact and bushy form. This annual plant doesn't need severe pruning. Remove spent flowers if you wish to extend foliage display.

Fertilizing

A light application of balanced fertilizer in spring is sufficient. Excess nitrogen promotes foliage at the expense of autumn color. A plant in poor soil often displays the most beautiful scarlet tint.

Pests and diseases

Generally robust and little susceptible to pests. Powdery mildew may appear in warm, humid weather: improve air circulation. Watch for spider mites in excessively dry conditions, though the plant resists well overall.

Did you know?

The belvedere burnished amaranth is famous for its spectacular autumn transformation: its fine leaves shift from tender green to intense scarlet or purple red, creating a ball of fire in the garden. In Asia, it was traditionally used as a broom and decoration for celebrations. Its name 'scoparia' comes from the Latin scopae, meaning 'broom,' because its fine branching resembles a broom.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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