Dahlia Penhill Dark Monarch
Dahlia 'Penhill Dark Monarch'
Price comparison:
£2.73 – £9.99
From 4 UK retailers
Dahlia Penhill Dark Monarch is a pollinator-friendly flowering bulb reaching about 1m tall. Produces flowers from July to October. A reliable choice for pollinator-friendly gardens.
Sun
☀️ Full Sun
Water
💧💧 Moderate
Hardiness
🌡️ H3 (Half Hardy)
Size
📏 1.0m tall × 60cm wide
Flowers
🌸 jul,aug,sep,oct
Wildlife
🐝 Pollinator-friendly (single varieties best)
Compare Prices
Prices from 4 retailers across 2 sizes
Prices shown are for different pot sizes — compare within size groups for accurate savings
Prices last checked: 10 May 2026
Prices exclude delivery. Check retailer for final price.
Retailers shown in order of price — lowest first within each size group.
| Farmer Gracy Flat rate per order. Free over £50. Ships from Netherlands | £2.73 | tuber | View at Farmer GracyOpens product page · Affiliate info |
| Garden Plants Online Free delivery on most orders | £3.49 | tuber | View at Garden Plants OnlineOpens product page · Affiliate info |
| Thompson & Morgan £6.99 for plants, £2.99 seeds only. Free over £60 | £9.99 | bare root | View at Thompson & MorganOpens product page · Affiliate info |
Farmer Gracy
Flat rate per order. Free over £50. Ships from Netherlands
Size: tuber
Garden Plants Online
Free delivery on most orders
Size: tuber
Thompson & Morgan
£6.99 for plants, £2.99 seeds only. Free over £60
Size: bare root
| Primrose Standard delivery from £4.99 | £6.99 | Check retailer for size | View at PrimroseOpens product page · Affiliate info |
Primrose
Standard delivery from £4.99
Size: Check retailer for size
Prices shown exclude delivery. Delivery charges vary by retailer — see individual listings for details.
Prices may vary. Click through to the retailer for current pricing.
Prices last checked: 10 May 2026
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Plant Information
About this plant
Dahlia Penhill Dark Monarch is a pollinator-friendly flowering bulb reaching about 1m tall. Produces flowers from July to October. A reliable choice for pollinator-friendly gardens.
Latin Name
Dahlia 'Penhill Dark Monarch'
Family
Hardiness Zone
H3
Care Level
moderate
Sun Exposure
full-sun
Water Needs
moderate
Flowering Season
jul,aug,sep,oct
Mature Height
1.0m
Frequently Asked Questions
How much does Dahlia Penhill Dark Monarch cost in the UK?
Dahlia Penhill Dark Monarch prices in the UK range from £2.73 to £9.99 depending on pot size and retailer. The cheapest price is currently at Farmer Gracy at £2.73. Prices are checked nightly across 4 UK nurseries.
Where can I buy Dahlia Penhill Dark Monarch online in the UK?
You can buy Dahlia Penhill Dark Monarch from 4 UK nurseries including Farmer Gracy, Garden Plants Online, Thompson & Morgan. ComparePlants.uk compares prices across all of them so you can find the best deal.
What is the scientific name for Dahlia Penhill Dark Monarch?
The scientific name for Dahlia Penhill Dark Monarch is Dahlia 'Penhill Dark Monarch'.
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