Snapdragon Red – “Antirrhinum Potomac”

Antirrhinum ‘Potomac Red’ is a striking snapdragon variety from the premium Potomac series, bred specifically for professional cut flower production. It produces tall, sturdy stems topped with rich, velvety crimson-red blooms that add depth and drama to bouquets and garden displays. Renowned for its heat tolerance, uniform flowering, and excellent vase life, Potomac Red is a favourite among commercial growers, florists, and home gardeners alike.

How to Grow Antirrhinum ‘Potomac Red’ Plugs:

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

Position:
Full sun (minimum 6 hours daily) in a sheltered, open location

Soil:
Rich, well-drained soil that retains moisture
pH: Slightly acidic to neutral (6.0–7.0)

Spacing:
20–30 cm apart in rows or beds
For cutting: space slightly closer to encourage strong, upright stems

Watering:
Maintain consistent moisture in the root zone
Avoid overhead watering to reduce the risk of fungal diseases

Feeding:
Apply a balanced liquid fertilizer every 2–3 weeks during the growing season
Switch to a potassium-rich feed once flower buds begin to develop for stronger blooms

Staking:
Recommended, particularly in windy areas, to support the tall flowering spikes

Where to Plant or Use:

Cut Flower Beds: Produces premium florist-quality stems

Greenhouse Rows: Performs exceptionally well in protected growing conditions

Mixed Borders: Creates bold vertical accents and rich colour contrast

Flower Fields: Combines beautifully with whites, soft pinks, oranges, and burgundy shades

Why You’ll Love It:

✔️ Rich Crimson-Red Blooms: Deep, luxurious colour that makes a bold statement in bouquets and the garden
✔️ Strong, Upright Growth: Tall, florist-quality stems with excellent uniformity
✔️ Trusted Potomac Genetics: Reliable performance with outstanding heat tolerance
✔️ Exceptional Vase Life: Long-lasting blooms ideal for floral arrangements
✔️ Perfect for South African Gardens: Thrives in sunny conditions and produces abundant flowers when kept well-watered