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Antirrhinum 'Crown Mixed' Seeds

Finding exactly the right height for a successful border can be surprisingly tricky: dwarf snapdragons tend to get lost amongst other plants, while the giant cutting varieties need endless staking and often flop over in summer storms. 'Crown Mixed' hits the absolute sweet spot—it grows to a perfect, bushy 45cm, creating generous mounds of vibrant colour that support themselves beautifully without any help whatsoever.

This cheerful mix creates an absolute carnival of cottage garden colour, producing dense flower spikes in vivid shades of scarlet red, hot pink, sunshine yellow, pure white, and deep purple. Because it branches so freely from the base, it creates a wonderful "flowering hedge" effect rather than just producing single stems. It's remarkably robust and weather-resistant, making it absolutely perfect for filling the middle tiers of mixed borders or for stuffing into large patio containers for a genuinely long-lasting summer display that just keeps on giving.


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🌿 Understanding the Plant

Antirrhinum majus 'Crown Mixed' is technically a Half-Hardy Annual (H3), though botanically it's actually a short-lived perennial that we treat as an annual in the UK climate.

This is a modern, open-pollinated variety that's been specifically bred for what plant breeders call an "intermediate" or "semi-dwarf" habit—tall enough to make a proper impact in the border but compact enough not to need staking. It retains the absolutely classic "snapping dragon's mouth" mechanism that insects adore, but holds those flowers on shorter, stockier stems than the traditional tall cutting varieties you might remember from your grandmother's garden.

Improved Disease Resistance: The 'Crown' series generally shows excellent field resistance to snapdragon rust (a common fungal disease that causes orange-brown spots on the leaves). This means the foliage stays greener and healthier for much longer into autumn, extending the flowering season significantly.

The Fascinating "Snap": The name "Antirrhinum" literally means "like a snout" in Greek, referring to the flower's resemblance to an animal's nose. Children love gently squeezing the sides of the flower to make the dragon's mouth "snap" open and shut—it's genuinely entertaining!

🌱 Growing Guide

Snapdragon seeds are absolutely tiny—almost dust-like—so handle them carefully and use quality seed compost.

How to Sow:
Sow indoors from February to April for flowers from June onwards. This is crucial: surface sow the seeds onto moist compost and do not cover them—they absolutely need light to germinate successfully. Just press them down very gently with your hand to ensure contact with the compost. Keep the tray warm (around 20-22°C ideally) and place it on a bright windowsill but out of direct scorching sun. Germination usually takes 10-14 days, sometimes up to 21 days if conditions aren't quite perfect.

Planting Out:
Wait until after the last frost danger has passed (usually mid-late May in most of the UK) before planting out your seedlings. Antirrhinum loves full sun—it simply won't flower well in shade. Thanks to their naturally bushy habit, they're absolutely excellent for mass planting in traditional bedding schemes or for completely filling large containers on patios.

The Professional Pinching Trick:
Even though 'Crown Mixed' is already a naturally branching variety, you can make it even bushier by pinching out the growing tip when plants reach about 10cm tall. Use your fingernails to nip out just the very top growing point. This temporarily delays flowering by a week or two, but the plant responds by producing multiple side shoots, giving you many more flower spikes overall—well worth the small wait!

Ongoing Care:
Once established and flowering, Antirrhinum is genuinely low-maintenance. Regular deadheading (removing faded flowers) encourages continuous blooming right through until the first hard frosts. They're reasonably drought-tolerant once established, though they'll perform better with occasional watering during very dry spells.

📋 Plant Specifications
Botanical Name Antirrhinum majus 'Crown Mixed'
Common Name Snapdragon 'Crown Mixed'
Plant Type Half-Hardy Annual (short-lived perennial grown as annual)
Hardiness H3 (Hardy to -5°C)
Light Requirements Full Sun ☀️
Height 40-50cm (intermediate/semi-dwarf)
Spread 35cm
Spacing Plant 30cm apart
Flowering Period June to October (with deadheading)
Perfect For 🏺 Containers & Patio Pots
🐝 Bumblebees
🌈 Traditional Bedding Schemes
🧱 Mid-Border Planting
👨👩👧👦 Family Gardens
Seeds per Packet Approximately 1000 seeds (tiny seeds!)
🤝 Beautiful Garden Combinations

'Crown Mixed' is robust and colourful enough to hold its own in even the busiest summer border:

  • 🌙 Nicotiana sylvestris: The day-and-night dream team! Plant the towering, white-flowered Nicotiana behind your Snapdragons to create a stunning layered effect. During the day, you'll enjoy the carnival colours of the Snapdragons in full sunshine, then as evening falls, the tall Nicotiana opens its tubular white flowers and releases the most incredible sweet fragrance that fills the entire garden. It's the perfect pairing for both visual impact and sensory delight.
  • ☁️ Cosmos 'Sensation Mixed': A delightful textural contrast. The solid, upright flower spikes of Snapdragons create a wonderful counterpoint to the floaty, feathery foliage and open daisy flowers of Cosmos. Both flower continuously throughout summer and share a love of full sun, making this combination both beautiful and incredibly easy to maintain.
📅 Sowing & Flowering Calendar

Sow indoors from late winter through spring. Flowers all summer until first frost.

Month J F M A M J J A S O N D
Sow Indoors
Plant Out
Flowering

👨👩👧👦 Entertainment Value for Children!
Snapdragons are the ultimate interactive flower and absolutely brilliant fun for children. Gently squeeze the sides of any flower to make the dragon's mouth "snap" open and shut—it's genuinely entertaining and never gets old! This alone makes Antirrhinum an absolutely essential plant if you're gardening with grandchildren or young ones.

🏆 RHS Plants for Pollinators

Antirrhinum is proudly listed on the RHS Plants for Pollinators register, recognizing its exceptional value for supporting pollinating insects. The complex flower structure is specifically designed for heavy insects like bumblebees, who are the only pollinators strong enough to force the petals open to reach the nectar inside. Watching a fat bumblebee wrestling its way into the flower, then backing out covered head-to-toe in pollen, is one of summer's great wildlife spectacles!

📖 Want more detailed growing advice?
View our Complete Growing Guide for Snapdragons →

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