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How to Grow Dahlia Bulbs
INDEX
- Sowing Instructions
- Where to Position
- Maintaining Your Dahlias
Sowing Instructions
- When to sow: Plant bulbs out in March, April or May
- Avoid planting out before the last frost
- Soil Preparation: Prepare soil by adding well rotted farm yard manure
- You can also add grit or vermiculite to the base of the hole to improve drainage
- Planting hole should be 30cm (1 ft) deep to allow for good drainage
- Plant with pointed end (eye) pointing upwards
- Depth: Plant tubers approx 3 times their size deep
- Spacing: 75cm apart
Where to Position
- Position in full sun, where bulbs will get at least 6 hours of sunlight each day
- Avoid frost pockets & exposed locations
- Dahlias are happy in most soils, but good drainage is important to prevent tubers from rotting
Maintaining your Dahlias
- Because dahlias are tender you should lift the bulbs each Autumn
- Clean, dry and store the bulbs indoors
- Store in a cool, dry and dark location
- Water well after planting & keep moist in the Summer months
- Feed every 2 weeks with a general purpose plant food
- As dahlias are shallow rooted, taller varieties will need staking
- If using plant support rings, position the rings before the Dahlia has grown tall
- Deadhead old flowers as they fade
- As you will be lifting your bulbs every Winter, you can divide them periodically
- Divide clumps of bulbs every 3 years
