How to Grow Wishbone Flower Midnight Blue

Wishbone Flower Midnight Blue

Torenia fournieri 'Midnight Blue'

flower

Wishbone Flower Midnight Blue is a tender annual with delicate, orchid-like flowers featuring deep purple-blue petals with contrasting lighter throat markings. The compact, mounding plant typically reaches 8-12 inches tall and blooms profusely from early summer through frost. Named for the wishbone-shaped stamens visible inside the flower, this variety is excellent for containers, borders, and hanging baskets.

Growing Conditions

☀️

Sun: Partial shade to dappled sunlight, 3-6 hours of indirect light daily; appreciates afternoon shade in hot climates

💧

Water: Keep soil consistently moist but not waterlogged; water regularly, especially in containers and warm weather. Prefers high humidity and benefits from misting.

📏

Spacing: 9 inches

📅

Days to maturity: 50-60 days from transplant to first blooms

🌱

Planting depth: Sow seeds on soil surface (light germinators); transplants should be planted at soil line

Soil

Type: Well-draining, fertile loamy soil

pH: 6.0-7.0

Amendments:

Compost peat moss perlite for drainage balanced fertilizer

Growing Zones

Find your zone →

Best grown as an annual in zones 2-9; can be perennial in zones 10-11

2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b

Growth Stages

Seedling

2-3 weeks

Tiny seedlings emerge with oval cotyledons and begin developing first true leaves

Keep soil moist, maintain warm temperatures (70-75°F), provide bright indirect light, avoid overwatering which causes damping off

Vegetative Growth

3-4 weeks

Plant develops bushy foliage with multiple stems and increased leaf production; remains compact and mounding

Provide bright indirect light, maintain consistent moisture, fertilize every 2-3 weeks with balanced liquid fertilizer, pinch tips if needed to encourage branching

Flowering

8-12 weeks or until first frost

Deep purple-blue orchid-like flowers with lighter lavender-white throats appear abundantly throughout the plant canopy

Deadhead spent blooms to encourage continuous flowering, maintain consistent moisture and humidity, continue regular fertilization, protect from extreme heat

Peak Bloom

4-8 weeks

Plant is completely covered in midnight blue flowers creating a stunning mass display

Maintain regular watering schedule, fertilize every 7-10 days, remove any diseased foliage promptly, provide afternoon shade if temperatures exceed 85°F

Decline/Frost Sensitivity

Until first frost

Foliage and flowers deteriorate as temperatures drop below 50°F; plant kills at first frost

Can be collected for seeds before first frost, harvest seed pods when they turn brown and papery, or dig up plants to bring indoors before frost

Companion Planting

Plan your garden →

Plant with:

Impatiens Begonias Ferns Hostas Lobelia Sweet potato vine Coleus Caladiums

Avoid planting near:

Aggressive spreading perennials Black walnut trees (produces juglone toxin)

Common Pests

Increase humidity through misting, spray with water to dislodge, use insecticidal soap if severe, ensure good air circulation
Yellow sticky traps, insecticidal soap, neem oil, reflective mulches, avoid over-fertilizing with nitrogen
Spray with strong water stream, insecticidal soap, neem oil, introduce beneficial insects like ladybugs
Allow soil surface to dry slightly between waterings, use sand layer on soil surface, yellow sticky traps, Bti (Bacillus thuringiensis israelensis)
Improve air circulation, reduce overhead watering, use sulfur dust or fungicide if needed, remove affected leaves promptly

Uses

🍳

Edible Flowers

Culinary

While not typically culinary, wishbone flower petals are technically edible and can garnish salads or desserts for their delicate flavor and striking appearance. [source]

🎨

Cut Flowers & Arrangements

Craft

The delicate, unique flowers add an exotic, tropical touch to fresh flower arrangements and small bouquets. Flowers last several days in a vase with clean water. [source]

🦋

Pollinator Attraction

Wildlife

The nectar-rich flowers attract hummingbirds, bees, and butterflies throughout the growing season, making it excellent for creating a pollinator-friendly garden. [source]

🏠

Container & Hanging Basket Gardening

Household

The compact, mounding growth habit and profuse blooming makes Midnight Blue ideal for containers, hanging baskets, window boxes, and small garden spaces with limited room. [source]

🏠

Shade Garden Color

Household

Its ability to thrive in partial shade makes it invaluable for adding vibrant color to shady borders, under trees, or on north-facing patios where sun-loving plants struggle. [source]

Harvest Tips

Wishbone Flowers are ornamentals; pinch back stems to encourage bushier growth and more blooms. For seed collection, allow a few flowers to fade and dry on the plant, then harvest papery seed pods when brown (typically August-September). Store dry seeds in cool, dry conditions until spring planting.

Fun Facts

🌱 Wishbone Flowers get their common name from the wishbone-shaped stamens visible when you look closely inside the flower—a unique and whimsical botanical feature.
🌱 Also called Bluewings, this plant is native to Vietnam and tropical Asia, which explains its love of warm temperatures, humidity, and preference for shade in the heat of summer.
🌱 The 'Midnight Blue' cultivar was specifically bred to achieve deeper, richer blue coloration compared to standard torenia varieties, making it one of the darkest blue-flowering annuals available.

Want personalized planting timelines?

Get started free