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Symphyotrichum novi-belgii

Fall Aster

Common names: New Belgium Aster, Smooth-leaved Aster, Rough-leaved Aster

Fall Aster

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Description

The fall aster is the great late bloomer of the garden year. When most of the garden has faded in September and October, it covers itself with a sea of violet, pink and white star-shaped flowers. For bees and butterflies it is one of the last and most important nectar sources before winter. In farmers' gardens it traditionally belongs to border plants.

Care instructions

Plant the fall aster in fertile, evenly moist soil in a sunny spot and water from below during dry periods, because the smooth-leaved aster otherwise tends to powdery mildew. Cut the stems back by one third at the end of May (week 22) once, which makes it bushier and more sturdy. Split dense clumps every two to three years in spring, which keeps it vital and blooming.

Soil & site

Soil pH

4.0pH 6–7.58.0

Soil type

loamy, humus-rich, moist, nutrient-rich, well-drained

LightFull sun
HardinessHardy
Water needMedium

Feeding

Medium feeder

Companion planting

Good neighbors

carrot family (Apiaceae)

Calendula and Tagetes next to carrots keep the carrot fly away with their scent.

For example Carrotcelery rootDillParsleyCarrot fennelCoriander and 19 more species in the catalogue

Source: classic companion planting (DACH-Gartenpraxis)

Rather not

nightshade family (Solanaceae)

Sunflowers release substances into the soil that inhibit potato tuber growth, and they also compete for water and nutrients.

For example PotatoTomatoSweet pepperCocktail tomatoEggplantCape gooseberry and 9 more species in the catalogue

Source: basic crop-rotation rule

Companion planting is partly traditional gardening lore. Where the reason is known, it is given.

Some of these explanations were machine-translated.

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