How to Grow Cassini Tulip
Cassini Tulip
Tulipa 'Cassini'
flowerCassini is a striking Darwin Hybrid tulip featuring deep crimson-red petals with a bold black base, creating dramatic contrast. This vigorous tulip grows 24-28 inches tall and produces large, cup-shaped flowers ideal for cut arrangements and garden displays. Known for its longevity and reliable perennial behavior, Cassini is a favorite among serious tulip gardeners.
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Example Cassini Tulip timeline · Pittsburgh, PA (Zone 6b)
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Plant Cassini Tulip
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 Cassini Tulip blooms
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Cassini Tulip dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, with best performance in zones 4-7
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Dormancy/Rooting
12-16 weeksBulb is planted in fall and develops roots in cool soil over 12-16 weeks
Plant bulbs in October-November in northern regions. Ensure soil drains well to prevent rot. Mulch lightly after planting to regulate soil temperature.
Emergence
2-3 weeksShoots and leaves push through soil in early spring as temperatures warm
Remove mulch once shoots emerge. Water moderately if spring is dry. Watch for late frost damage to emerging foliage.
Vegetative Growth
3-4 weeksTall stems with blue-green foliage develop, forming sturdy flower buds within the stem
Provide staking in windy areas due to tall height. Remove any damaged or diseased leaves. Continue moderate watering.
Flowering
2-3 weeksLarge, cup-shaped crimson-red flowers with black basal markings open in mid to late spring
Deadhead spent flowers but leave stems intact to allow bulb energy reabsorption. Enjoy blooms for 2-3 weeks. Avoid overhead watering to prevent petal damage.
Senescence & Dormancy
6-8 weeksFoliage yellows and dies back as plant enters dormancy; bulb stores energy underground
Do NOT cut back foliage until completely yellow and dry (6-8 weeks after flowering). Stop watering. Leave bulbs undisturbed in ground for perennial flowering next year.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove infected plants immediately; virus causes color breaking/streaking. Control aphids which spread the virus. Use only virus-free bulbs from reputable suppliers.
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Plant bulbs in protective cages or wire mesh; use repellents or predator urine; plant garlic cloves nearby as deterrent
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Remove infected leaves promptly; improve air circulation; avoid overhead watering; apply fungicide if severe
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Hand-pick; use beer traps; apply diatomaceous earth; remove garden debris where they hide
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Spray with water to dislodge; use insecticidal soap; introduce beneficial insects like ladybugs
Uses
Edible petals for garnish
CulinaryTulip petals are edible and can be used as a colorful garnish for salads and desserts. Only use petals from pesticide-free ornamental tulips grown specifically for consumption. [source]
Cut flowers and arrangements
HouseholdCassini is prized for floral arrangements and cut flower displays due to its tall stems, large blooms, and excellent vase life. The dramatic dark red color makes it a striking focal point in spring bouquets. [source]
Early spring pollinator food
WildlifeTulips provide important early-season nectar and pollen for emerging bees and other pollinators in spring when food sources are scarce. [source]
Garden design and landscaping
CraftThe striking crimson-red flowers with black markings make Cassini an excellent choice for formal beds, borders, and mass plantings. Its tall, sturdy stems are ideal for structured garden designs. [source]
Traditional herbal use
MedicinalHistorical herbalism attributed various tulip species with minor medicinal properties, though modern use is largely ornamental. Always consult healthcare providers before using any plant medicinally. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut stems in early morning when flowers are fully open but not yet fully mature for longest vase life. Cut at least 6 inches of stem, removing any foliage that would sit below water. Change water every 2-3 days and remove any spent flowers. Lasts 7-10 days in a vase. Do NOT cut foliage on planted bulbs until completely yellow—this energy is vital for next year's blooms.
Fun Facts
- 🌱 Cassini is a Darwin Hybrid tulip, a class developed in the 1950s by Dutch breeders who crossed Darwin tulips with wild Tulipa fosteriana, resulting in larger flowers and greater perennial vigor than standard garden tulips.
- 🌱 The dramatic black base (called the 'blotch') of Cassini flowers serves an important biological purpose: it creates a dark platform that guides bees directly to the flower's center, improving pollination efficiency.
- 🌱 Tulips were at the center of 'Tulip Mania' (Tulipmania) in 17th-century Holland, when rare variegated tulips became so valuable that single bulbs sold for prices exceeding the cost of Amsterdam townhouses.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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