Snapdragon White – “Antirrhinum Potomac”

Antirrhinum ‘Potomac White’ is a premium snapdragon variety bred for cut flower production, producing tall, sturdy stems topped with pure, crisp white blooms that radiate elegance and freshness. Part of the renowned Potomac series, this variety is celebrated for its excellent vase life, uniform growth, and strong performance in warmer climates—making it a must-have for commercial growers, florists, and home gardeners seeking timeless beauty.

How to Grow Antirrhinum ‘Potomac White’ Plugs:

Planting Time:
Late summer to early autumn, or early spring after frost has passed

Position:
Full sun (at least 6 hours daily) in a sheltered, open position

Soil:
Rich, well-draining soil with good moisture retention
pH: Slightly acidic to neutral (6.0–7.0)

Spacing:
20–30 cm apart in rows or garden beds
For cut flower production: space closer for straighter stems

Watering:
Keep soil consistently moist, especially during dry periods
Avoid overhead watering to reduce risk of fungal disease

Feeding:
Apply a balanced liquid fertilizer every 2–3 weeks during active growth
Boost with potassium-rich feed once budding begins

Staking:
Recommended for tall stems to prevent bending or snapping in wind

Where to Plant or Use:

• Cut Flower Beds: Essential for bridal and event arrangements

• Formal Borders: Adds height and brightness to structured plantings

• Greenhouse Rows: Performs well under protection for early harvests

• Mixed Flower Fields: Complements any colour palette, from pastels to bold tones

Why You’ll Love It:

✔️ Pure White Blooms: A timeless, versatile colour perfect for weddings and events
✔️ Strong, Tall Stems: Ideal for cutting, with minimal staking required
✔️ Trusted Potomac Series Genetics: Uniform flowering and heat tolerance
✔️ Florist Favourite: Superior vase life and professional-quality stems
✔️ Performs Well in SA Conditions: Thrives in moderate to warm climates with proper care