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Conservatory GreenhouseHerbaceous Perennial

Chrysanthemum 'Boulou Yellow' (12)

chrysanthemum 'Boulou Yellow'

A half-hardy perennial that produces vigorous, bushy plants with thick stems and flowers in mid to late autumn. Plants are relatively dwarf reaching 60cm in height. It bears double, incurved blooms in a warm yellow. Disbudded, these reach 14cm across. Florets are long and broad, overlapping, pointed and curled

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Ultimate height

0.5–1 metres

Time to ultimate height

1–2 years

Ultimate spread

0.1–0.5 metres

Loam

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–facing

Exposure

Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Asteraceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Potentially harmful: Skin allergen. Wear gloves and other protective equipment when handling
Genus: Chrysanthemum are erect woody-based perennials with aromatic, pinnately lobed leaves and flowerheads of diverse form, from late summer to late autumn
Name status: Accepted

How to grow

Cultivation

For strong plants with large blooms, restrict to three stems per plant. Plant out in pots after danger of frost has passed. Stake (see staking perennials) and feed regularly. Bring inside before the first frost to flower. Store stools in frost-free conditions, ready for bringing on for cuttings in spring. See chrysanthemum cultivation

Propagation

Propagate by basal softwood cuttings in spring

Suggested planting locations and garden types

Patio and container plants
Cut flowers

Pruning

Pinch out growing tips and disbud as required

Pests

Susceptible to Chrysanthemum leaf miner, glasshouse whitefly and aphids

Diseases

May be susceptible to glasshouse grey mould, powdery mildews and chrysanthemum white rust

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