From My Garden to Yours
black dahlia bud pink dahlia
yellow black mystic dahlias
August 28, 2021

Structural Support for Dahlias

My biggest challenge with dahlias: keeping them upright and looking natural. I have tried various methods: tomato cages, teepees, metal supports and now finally we’ve mastered bamboo supports which is the best so far.

I like using bamboo supports because we build them ourselves which is inexpensive, easily modified and we can customize the size and shape to full support the dahlias while providing adequate ventilation.

Dyed green bamboo is my preference as it is blends in well with dahlia foliage. But we can’t always find them locally. So instead, we bought green stain for wood and painted all the bamboo stakes before getting started and let them dry.

Assembling Supports

drilling dahlia bamboo supports
Drilling bamboo at intersection of supports
dahlia bamboo supports with floral wire
Floral wire inserted and wrapped around bamboo
dahlia bamboo supports with twist tie
Horizontal support drilled for twist tie
white dahlias with bamboo support structure
Adding horizontal bamboo as dahlia gets taller

Supplies Needed

  • bamboo stakes
  • Green stain (optional)
  • Floral wire
  • Drill with small bit
  • Twist Ties

Dahlias with Supports

white dahlias with bamboo supports

Other Types of Supports

In previous years we have tried tomato cages and teepees like this. However, they didn’t provide enough room to the plant and they weren’t able to fully expand naturally.

black yellow dahlia in tomato cage
Tomato cage
red dahlia in teepee
Teepee – early in season
red dahlia in tomato cage
Teepee – late in season

More information

I got this idea from BBC Gardener’s World Magazine and then modified it for dahlias. I encourage you to take a look at their article because it provides an image of the interior grid that is no longer visible within my dahlias.

An interior grid of bamboo really helps to keep the branches upright and enhances even ventilation throughout.

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