How to Grow Grandiflora Rose 'Double Delight'
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Grandiflora Rose 'Double Delight'
Rosa × grandiflora 'Double Delight'
shrub'Double Delight' is a legendary hybrid grandiflora rose renowned for its intoxicating fragrance and stunning bicolor blooms featuring deep red petals with creamy white reverse. The plant produces abundant, large double flowers throughout the growing season and is highly prized by rose enthusiasts and cut flower growers. It has won numerous awards including the prestigious All-America Rose Selection.
When should you plant Grandiflora Rose 'Double Delight' in your zone?
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Example Grandiflora Rose 'Double Delight' timeline · Pittsburgh, PA (Zone 6b)
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Plant Grandiflora Rose 'Double Delight'
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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Harvest Grandiflora Rose 'Double Delight'
Around Jul 16≈ 90 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 6-9; hardy to zone 5b with winter protection
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Establishment
4-6 weeksYoung transplant with limited foliage; graft union healing and root system developing
Keep soil consistently moist but not saturated. Protect from extreme heat and wind. Avoid fertilizing for first 4 weeks. Remove any flower buds in first 4-6 weeks to encourage strong root establishment.
Vegetative Growth
6-8 weeksCanes elongate rapidly, producing new leaflets and side shoots; plant becomes bushier and more robust
Begin monthly fertilizing with balanced rose fertilizer (10-10-10 or similar). Prune spent flowers to encourage branching. Remove any diseased or weak growth. Maintain consistent watering and monitor for pests.
Budbreak & Bloom Initiation
3-4 weeksFlower buds form at cane tips and branch terminals; buds swell and begin showing color
Switch to higher potassium fertilizer (e.g., 10-20-20) to support flowering. Ensure 6-8 hours of direct sunlight daily. Keep foliage dry; water at soil level only. Watch for spider mites and powdery mildew during this stage.
Full Bloom
4-6 weeks per flush; continuous through seasonLarge, full double flowers open in characteristic red-and-cream bicolor form with powerful fragrance; blooms persist for 1-2 weeks per flush
Deadhead spent flowers just above the first outward-facing 5-leaflet leaf to encourage repeat blooming. Continue fertilizing every 4-6 weeks. Increase watering if temperatures exceed 85°F. Harvest flowers early morning for best fragrance and longevity in arrangements.
Fall/Winter Dormancy
3-4 monthsBlooming slows or stops as temperatures cool; foliage may change color; canes harden off
Reduce fertilizing in late summer/early fall. Stop deadheading in fall (leave hips to signal dormancy). In zones 5-6, mound 10-12 inches of soil/mulch around base for winter protection. Prune in early spring (late March/April in zone 6) to 2-3 feet tall, removing dead/diseased wood.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick in early morning; use traps placed away from roses; apply neem oil or pyrethrin-based insecticides; introduce parasitic wasps
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Spray with strong water stream to dislodge; use sulfur dust or horticultural oil; increase humidity; neem oil; avoid over-fertilizing
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Remove infected plants immediately; control with sulfur sprays during dormancy; prevent mite spread through pruning sanitation
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Improve air circulation by pruning; avoid overhead watering; apply sulfur dust or potassium bicarbonate spray; use neem oil; remove infected leaves
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Hand-pick if severe; spray with insecticidal soap; use spinosad for heavy infestations; prune affected leaves
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Remove infected leaves immediately; avoid wetting foliage; apply fungicide (sulfur, copper, or myclobutanil) weekly; improve air circulation
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Spray with water jet; insecticidal soap; neem oil; introduce ladybugs; use pyrethrin spray for heavy infestations
Uses
Rose Water & Edible Petals
CulinaryThe fragrant petals can be used to make rose water, infuse teas, or crystallize as cake decorations. However, ensure pesticide-free cultivation if petals will be consumed. [source]
Cut Flower Arrangements
Culinary'Double Delight' is a premium florist rose prized for luxury bouquets and wedding arrangements due to its exceptional fragrance, bicolor beauty, and long vase life. Professional florists breed this variety specifically for the cut flower market. [source]
Fragrance & Perfumery
HouseholdThe intensely fragrant blooms release a spice-vanilla-fruit aroma that can scent entire gardens or cut-flower rooms. Rose oil and absolutes from fragrant varieties are used in premium perfumes and home fragrance products. [source]
Pollinator Support
WildlifeWhile the double flowers provide limited pollen/nectar due to petaloid stamen, ungrafted or lightly doubled rose varieties support bees and beneficial insects. The plant structure provides shelter and nesting sites. [source]
Dried Petals & Potpourri
CraftThe fragrant petals retain scent well when dried and are excellent for potpourri, sachets, teas, and craft projects. Dry petals quickly in low heat or air-dry in bundles. [source]
Harvest Tips
Cut flowers early morning after dew dries but before heat of day. Cut at 45-degree angle just above an outward-facing 5-leaflet leaf. Remove lower foliage below the waterline in the vase. Re-cut stems every 2-3 days and change water daily. Blooms last 7-10 days in a vase if properly conditioned. For longest vase life, cut when outer petals are just beginning to unfurl. Double Delight is renowned for its longevity in arrangements.
Fun Facts
- 🌱 'Double Delight' was hybridized in 1977 by the renowned breeder Herbert C. Swim and is considered one of the most fragrant modern roses ever developed, with a complex scent profile combining damask, tea, spice, and vanilla notes.
- 🌱 The rose won the All-America Rose Selection award in 1985 and remains a gold standard in rose breeding, frequently used as a pollen parent to create new fragrant varieties.
- 🌱 The dramatic red-and-cream color variation is not consistent—color intensity varies with temperature, light exposure, and age, creating a 'painted' appearance that intensifies in cool weather and fades in heat, making each bloom unique.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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