How to Grow Snapdragon Coronette

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Snapdragon Coronette

Antirrhinum majus 'Coronette'

flower

Snapdragon Coronette is a dwarf variety of common snapdragon, reaching only 12-15 inches tall with dense, compact growth. It produces vibrant spikes of double flowers in a wide range of colors, blooming profusely from spring through fall. This variety is excellent for containers, borders, and cut flowers.

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Example Snapdragon Coronette timeline · Pittsburgh, PA (Zone 6b)

Plant Snapdragon Coronette
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
First Snapdragon Coronette blooms
Around Jun 16

≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Snapdragon Coronette dates for your own zip code.

Growing Conditions

☀️

Sun: Full sun, 6-8 hours daily minimum (tolerates partial shade in hot climates)

💧

Water: Keep soil consistently moist but not waterlogged; water at soil level to avoid foliage diseases. Reduce watering slightly once established. Drought tolerant once mature, but flowers perform best with regular moisture.

📏

Spacing: 8 inches

📅

Days to maturity: 60-90 days from seed to first flowers

🌱

Planting depth: Surface sow seeds (do not cover, as they require light to germinate); transplants at soil level

Soil

Type: Well-draining loamy soil

pH: 6.0-7.0

Amendments:

Compost Peat moss Perlite for drainage Balanced slow-release fertilizer

Growing Zones

Find your zone →

Thrives as annual in zones 2-10; can be perennial in zones 9-10

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

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Growth Stages

Germination & Seedling

2-3 weeks

Tiny seedlings emerge within 7-14 days, developing first true leaves. Plants are fragile and small (0.5-1 inch).

Keep soil moist but not soggy; provide bright light (12-14 hours daily under grow lights or south-facing window); maintain temperature 65-75°F. Thin seedlings to prevent crowding.

Vegetative Growth

3-4 weeks

Plants develop multiple stems and foliage, growing to 3-6 inches tall. Leaves are lance-shaped and mid-green.

Pinch growing tips at 2-3 inches tall to encourage bushier growth. Gradually acclimate to outdoor conditions (hardening off) over 7-10 days before transplanting. Fertilize every 2 weeks with balanced liquid fertilizer.

Flowering Initiation

2-3 weeks

Plant reaches 8-12 inches tall; flower buds begin forming at stem tips as clusters.

Deadhead spent flowers to encourage continued blooming. Provide consistent water and weekly fertilization (transition to lower nitrogen, higher phosphorus formula). Ensure full sun exposure.

Peak Blooming

6-10 weeks

Dense spikes of double flowers cover the compact plant in vibrant colors (red, pink, white, yellow, purple, bi-colors). Plant reaches full 12-15 inches tall.

Deadhead regularly to extend bloom cycle. Water consistently, especially in heat. Fertilize weekly. Stake or support if grown in windy locations. Mist foliage in extreme heat to prevent stress.

Late Season & Decline

Until frost or end of season

Flowering may slow in extreme heat (above 85°F) or as days shorten in fall. Plant remains attractive but produces fewer new flowers.

Continue deadheading to maintain some flowering. Reduce watering slightly if autumn rains increase. Can be pulled at season end. In warm climates (zones 9-10), may regenerate with pruning.

Companion Planting

Plan your garden →

Plant with:

Alyssum Dusty Miller Lobelia Petunia Salvia Marigold Calendula Dianthus

Avoid planting near:

Fennel Dill

Common Pests

Avoid overhead watering; improve air circulation; apply sulfur-based fungicide if spotted; remove infected foliage; choose resistant varieties when possible
Increase humidity; spray foliage with water to dislodge; apply neem oil or insecticidal soap; avoid over-fertilizing with nitrogen
Use yellow sticky traps; spray with insecticidal soap or neem oil; encourage natural predators like ladybugs
Spray with water to dislodge; apply insecticidal soap or neem oil; introduce beneficial insects such as ladybugs or lacewings
Ensure good air circulation; avoid wetting foliage; apply sulfur dust or fungicide; remove severely affected leaves

Uses

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Edible Petals for Garnish

Culinary

Snapdragon petals are edible and add visual appeal to salads, desserts, and plated dishes. They have a mild, slightly sweet flavor and are completely safe for consumption. [source]

🎨

Cut Flowers & Floral Arrangements

Craft

Coronette snapdragons are excellent cut flowers with a long vase life (7-10 days) and bold, dramatic flower spikes. They add height and structure to bouquets and are popular in both commercial and home arrangements. [source]

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Traditional Herbal Remedy

Medicinal

Historically, snapdragon flowers and leaves have been used in herbal medicine to treat respiratory issues, inflammation, and skin conditions. Modern scientific research on these applications is limited. [source]

🦋

Pollinator Attraction

Wildlife

Snapdragons attract bumblebees, which use their weight to pry open the flower's mouth to access nectar. They are also visited by butterflies and other beneficial insects, making them valuable in pollinator gardens. [source]

🏠

Garden & Container Display

Household

The dwarf Coronette variety is perfect for small spaces, window boxes, containers, and front borders. Its compact, bushy growth and long bloom season make it a reliable ornamental choice for consistent color. [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 spikes in early morning when 2-3 flowers on the spike are open. Cut stems 6-8 inches long with a sharp knife. Remove lower foliage and place in cool water immediately. Snapdragons last 7-10 days in a vase. Continue deadheading spent flowers on garden plants to encourage more blooms.

Fun Facts

🌱 Snapdragon seed pods resemble tiny skulls, which inspired the common name and made them popular in Victorian 'language of flowers' symbolism—they represented deception and concealment.
🌱 The flower structure is pollinator-engineered: bumblebees are heavy enough to force the flower's 'mouth' open to reach the nectar, while lighter insects cannot access the reward, ensuring effective pollination.
🌱 Coronette is a relatively modern F1 hybrid cultivar (developed in the late 20th century) that produces double flowers and very uniform, compact growth, unlike the more variable seed-grown heirloom snapdragons.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Deadhead Full Sun Hardening Off Partial Shade pH Transplant True Leaves

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