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Want to go large? Don’t pinch.

How to grow dahlias. With a little effort you can grow dahlias that put on a show of flowers from June to the first frosts. Dahlias come in a wide range of varieties, colours and sizes. Summer isn’t summer without them!

A cartoon about growing dahlias. This cartoon shows two worms in a border with a dahlia plant. On elf the flowers has fallen over and is lying on top of one of the worms.. The copy reads: To produce more flowers and bushier Dahlias' remove all but five of the shoots sprouting from a tuber. One worm says to the worm under the flower” Feed fortnightly with a high potash feed, like tomatoes” The other worm says, “Don’t forget to tie them in too”

For taller plants and bigger flowers, reduce the stem number and don’t pinch. You’ll get fewer, but bigger flowers. If you’re growing dahlias, or thinking of growing dahlias, this is our worm’s eye view on dahlias. Here’s a link to our page, A worm’s eye view on dahlias

A cartoon about growing dahlias. This cartoon shows two worms in a border with a dahlia plant. The worms are both looking up the plant, skywards. The copy reads: Dahlias come in a range of sizes. From dwarf' compact to the thousands of tree varieties available today. One worm says to the worm under the flower” Apparently the original tree dhalia grew five metres tall ...” The other worm says, “Good luck picking those flowers”

In short, Dahlias like a fertile, moist but well-drained soil, and a sunny, sheltered spot. Dahlias hate the cold. They perish in frosts, and thoroughly dislike damp and wet soil. Back what they like. They like watering thoroughly, once a week, and feeding fortnightly – using a high potash feed, like tomatoes. There you go. Oh yes, the taller varieties need staking.

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If growing dahlias indoors, you can harden them off in a cold frame, before planting in their final positions. Here’s one we made earlier …

Here’s our guide to building a cold fame

Make your own cold frame – we did. If it helps, here’s a pdf to download and use – click this link to open a new page

That’s enough from the worms, here’s some tip-top advise, on dahlias, from the experts

Including protecting your plants from slugs advice.

Gardener’s World talk about how to grow dahlias

Dahlia growing guide from the RHS

‘Three Acres Farm’ A beginners guide to growing dahlias

Great direction, packed full of links and further reading

Year-round garden pruning guide

Great advice and full of quick and simple tips too, for example … don’t cut into tender plants or evergreens right now as their top growth provides insulation from penetrating cold.

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