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Solidago altissima

Solidago altissima
Goldenrod

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This plant carries a 12 months recovery warranty

More information

Solidago altissima is a tall perennial, non-invasive goldenrod.
Height at maturity
2 m
Spread at maturity
60 cm
Exposure
Sun
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Recommended planting time February to April, September to November
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Flowering time August to October
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Description

Solidago altissima is a tall perennial, non-invasive goldenrod. It has a slightly creeping rhizome base with upright, flexible stems bearing narrow and toothed, dark green leaves.

The large golden-yellow flowers appear late in the season, reaching up to 2 metres (7 feet) high.

These perennial plants are highly appreciated for their late flowering, modern varieties of goldenrods have mostly replaced the old, invasive and less attractive ones. They are robust plants that only dislike excessive heat and drought, which can cause powdery mildew on the foliage.

Flowering

Flower colour yellow
Flowering time August to October

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 2 m
Spread at maturity 60 cm
Growth rate normal

Botanical data

Genus

Solidago

Species

altissima

Family

Asteraceae

Other common names

Goldenrod

Product reference • 849311

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Planting and care

Plant Solidago altissima in full sun, in any rich and moist soil. Avoid excessive heat and humidity, which can cause powdery mildew.

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Planting period

Recommended planting time February to April, September to November

Intended location

Suitable for Meadow
Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Planting density 3 per m2
Exposure Sun
Soil pH Neutral
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil

Care

Pruning instructions Prune the dry stems in late winter.
Pruning Pruning recommended once a year
Pruning time March to April
Overwinter Can be left in the ground

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