Snapdragon
Antirrhinum majus · Plantaginaceae
The gardener's calendar
Ideal time to plant snapdragon: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous to semi-evergreen depending on climate
- Flowering
- May to October (summer and autumn)
- Adult size
- 30 to 80 cm tall depending on variety
- Growth
- Fast
- Hardiness
- Moderate, frost-sensitive below -10°C
- Origin
- Mediterranean basin and southwestern Europe
- Soil type
- Well-drained, light, slightly chalky soil acceptable
Care
Watering
Water regularly during growth and flowering periods, keeping the soil moist but not waterlogged. In summer, increase frequency if temperatures exceed 25°C. Gradually reduce watering in autumn and limit it in winter.
Light exposure
Plant snapdragons in full sun (at least 6 hours per day) for abundant flowering and vigorous stems. Partial shade is tolerated but flowering will be less profuse and the plant may become leggy.
Pruning and pinching
Pinch young shoots at 15-20 cm height to encourage branching and a bushier shape. Regularly remove spent flowers to encourage new flower formation. Cut back the plant after the first flowering wave to promote a second bloom in autumn.
Soil
Snapdragons prefer light, well-drained soil preferably rich in organic matter. Poor drainage causes root rot. Amend the soil with well-decomposed compost before planting to promote growth.
Fertilizer
Apply balanced or phosphorus-rich fertilizer every 15 days during flowering to support flower production. Limit nitrogen applications, which promote foliage at the expense of blooms.
Diseases and pests
Watch for powdery mildew in conditions of high humidity and heat. Aphids and whiteflies sometimes affect young shoots. Ensure good air circulation and avoid watering late in the day to prevent fungal diseases.
Did you know?
The snapdragon gets its curious name from the shape of its flower: when you gently squeeze the sides of the calyx, the corolla opens and closes like a little mule's mouth. This characteristic makes it a playful plant much loved by children. In the Middle Ages, snapdragons were considered magical plants for protection against witches, cultivated near homes to ward off evil spirits.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.