How to Grow Kikusui
Kikusui
Chrysanthemum morifolium 'Kikusui'
flowerKikusui is a Japanese chrysanthemum cultivar prized for its large, golden-yellow pompom-style blooms that can reach 4-5 inches in diameter. This popular ornamental flower is widely grown for cut flowers, garden displays, and floral arrangements. It represents a refined selection of the morifolium species, valued for its vibrant color and full, perfectly-formed flower heads.
When should you plant Kikusui in your zone?
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Example Kikusui timeline · Pittsburgh, PA (Zone 6b)
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Plant Kikusui
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Kikusui blooms
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Kikusui dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9, with protection in zones 3-4
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Seedling & Establishment
3-4 weeksSmall green shoots with 2-3 sets of true leaves emerge; plants are delicate and tender
Keep soil moist; maintain temperatures 65-75°F; provide bright indirect light; thin seedlings to prevent crowding
Vegetative Growth
4-6 weeksPlant develops bushy foliage with multiple stems branching out; leaves are deeply lobed and finely textured
Pinch back growing tips when plants reach 6 inches to encourage branching; fertilize every 2 weeks with balanced fertilizer; ensure full sun exposure
Bud Formation
3-4 weeksFlower buds begin forming at branch tips; plant continues to grow taller; daylight-sensitive response triggers bud initiation
Stop fertilizing or reduce nitrogen to promote flowering; maintain consistent moisture; reduce watering frequency slightly; continue pinching if needed for shape control
Flowering
4-6 weeksLarge, full pompom blooms open in golden-yellow; each flower head reaches 4-5 inches; blooms appear in profusion on mature plants
Deadhead spent flowers to encourage continued blooming; water at base only; avoid overhead irrigation; support tall stems with stakes if needed
Post-Bloom & Dormancy
4+ weeksFlowers fade and dry; foliage may yellow; plant prepares for winter rest in cold climates
Cut back spent stems to 3-4 inches after frost in cold zones; in mild climates, cut back by one-third; mulch around base for winter protection; store dormant crowns in cool location if lifted
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use neem oil or insecticidal soap; increase humidity; ensure good air circulation
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Spray with strong water stream; apply insecticidal soap; introduce ladybugs; use neem oil
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Use yellow sticky traps; spray with neem oil or insecticidal soap; vacuum affected leaves gently
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Remove affected leaves; apply neem oil; encourage beneficial parasitic wasps
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Improve air circulation; avoid overhead watering; apply fungicide or sulfur spray; remove infected leaves
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Remove affected foliage; avoid wetting leaves; apply copper fungicide; improve drainage and spacing
Uses
Edible Flower Garnish
CulinaryKikusui chrysanthemum petals are edible and can be used as a decorative and slightly bitter garnish for salads, soups, and plated dishes. They add visual appeal and a subtle herbal note to culinary presentations. [source]
Cut Flower Arrangements
HouseholdKikusui's large, perfectly-formed pompom blooms are highly prized for floral arrangements, bouquets, and wedding displays. The long vase life of 2-3 weeks and vibrant golden color make it a florist favorite. [source]
Traditional Herbal Remedy
MedicinalIn traditional Chinese and Japanese medicine, chrysanthemum flowers are brewed as a soothing tea believed to reduce heat and inflammation, support eye health, and calm the nervous system. The flowers are commonly used in chrysanthemum tea preparations. [source]
Pollinator Support
WildlifeKikusui chrysanthemums attract and support pollinators including honeybees, native bees, and butterflies, making them valuable for supporting local ecosystems and garden biodiversity. [source]
Pressed Flower Art
CraftThe delicate petals and vibrant yellow color of Kikusui blooms make them excellent for pressing and drying for botanical art, bookmarks, greeting cards, and craft projects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For cut flowers, harvest blooms in the morning after dew dries; cut stems at a 45-degree angle above a leaf node when flowers are just fully open; place immediately in clean water with floral preservative; Kikusui blooms last 2-3 weeks in a vase; deadhead spent flowers on living plants to extend blooming period by several weeks
Fun Facts
- 🌱 Kikusui means 'golden water' in Japanese, reflecting the flower's brilliant yellow color and the Japanese cultural significance of chrysanthemums, which are Japan's national flower and symbol of the imperial family.
- 🌱 Chrysanthemums, including the Kikusui cultivar, are photoperiodic plants that bloom in response to shorter day length in fall; growers can manipulate blooming time by controlling light exposure, making them available year-round from commercial growers.
- 🌱 In the Victorian language of flowers, yellow chrysanthemums symbolize joy, optimism, and long life, and chrysanthemums are traditionally given in East Asian cultures during the Chrysanthemum Festival and for honoring ancestors.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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