How to Grow Blue Stallion
Wikimedia Commons
Blue Stallion
Ipomoea nil
vineBlue Stallion is a stunning Japanese morning glory variety prized for its large, deep blue flowers with contrasting white throats. These vigorous annual vines produce abundant blooms throughout the growing season and are perfect for trellises, arbors, and vertical gardens. The flowers open in the morning and typically close by afternoon, creating a dramatic daily display.
When should you plant Blue Stallion in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Blue Stallion timeline · Pittsburgh, PA (Zone 6b)
-
Plant Blue Stallion
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Blue Stallion
Around Jun 6≈ 50 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Blue Stallion dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-11 as an annual; perennial in zones 10-11
Sign up free to see if Blue Stallion grows in your zone — and get a personalized planting timeline.
Get my Blue Stallion timeline →Growth Stages
Germination & Seedling
2-3 weeksSeeds sprout within 7-14 days with warm soil (70-80°F). Seedlings develop two cotyledons and quickly produce true leaves.
Scarify seeds or soak overnight to improve germination. Provide warm, humid conditions and bright light. Thin seedlings to strongest plants.
Vegetative Growth
3-4 weeksVine elongates rapidly, producing heart-shaped leaves along the stems. Plant becomes bushy and dense with vigorous growth.
Provide sturdy support structure (trellis, string, or netting). Pinch tips early if desired to encourage branching. Keep soil consistently moist and feed every 2 weeks with balanced fertilizer.
Flowering
6-10 weeks (continuous until frost)Large, funnel-shaped blue flowers with white throats appear profusely along vine nodes. Blooms open in early morning and close by afternoon.
Maintain regular watering and switch to lower-nitrogen fertilizer to encourage blooms over foliage. Remove spent flowers to keep plant tidy.
Seed Production
3-4 weeks after floweringAfter pollination, small round seed pods develop below faded flowers. Pods mature and dry on the vine.
Allow some flowers to go unpicked if you want to collect seeds for next year. Let pods fully dry on vine before harvesting.
Frost Senescence
1-2 weeksFirst frost (around 32°F) kills vine back completely. Plant blackens and withers.
Remove dead vines from support structures. In frost-free zones, plants may persist as short-lived perennials; cut back hard for renewed growth.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with water to dislodge; use neem oil or insecticidal soap if severe. Maintain humidity to deter.
-
Spray with strong water stream or apply neem oil. Encourage natural predators like ladybugs.
-
Hand-pick in early morning and drop into soapy water. Use row covers when young. Apply spinosad if infestation is severe.
-
Yellow sticky traps; spray undersides of leaves with insecticidal soap or neem oil.
Uses
Ornamental floral display
HouseholdBlue Stallion creates stunning vertical garden screens, arbor covers, and trellis displays with continuous blooms throughout the growing season. The vivid blue flowers with white centers provide dramatic color that attracts attention and admiration. [source]
Cut flower arrangements
CraftThe large, striking blooms are excellent for fresh floral arrangements when cut in the morning. While flowers close by afternoon, they reopen the next morning if kept in water indoors. [source]
Pollinator attraction
WildlifeThe abundant flowers attract bees, hummingbirds, and butterflies throughout the blooming period, providing essential nectar and pollen sources. The dense vine foliage also offers shelter for beneficial insects. [source]
Edible flowers (garnish)
CulinaryThe fresh flowers are edible with a slightly sweet flavor and can be used as an elegant garnish for salads and desserts, though primarily grown for visual appeal rather than culinary significance. [source]
Harvest Tips
Morning glories are grown for ornamental flowers, not harvesting for use. Cut stems for arrangements in the morning when flowers are fully open. If collecting seeds, allow pods to mature and dry completely on the vine, then harvest and store in cool, dry place. Seeds remain viable for 2-3 years.
Fun Facts
- 🌱 Blue Stallion is a Japanese morning glory (Ipomoea nil) cultivar, distinct from common morning glories (Ipomoea purpurea). Japanese varieties often produce larger, more complex flowers.
- 🌱 The flowers open in response to light at dawn and close by early afternoon as a mechanism to prevent water loss and protect pollen from afternoon heat.
- 🌱 Morning glories have been cultivated in Japan for over 500 years, with elaborate breeding programs creating varieties with frilled edges, double petals, and striking color combinations.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Blue Stallion planting timeline
Tell us your zip code and we'll calculate exactly when to start Blue Stallion seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Blue Stallion timeline →