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Dahlia Growing Guide

Location:
  • Before planting, choose a suitable location in your garden.
  • Dahlia’s like full sun, I find they grow well with morning sun and afternoon shade.
  • Also good drainage is important.
Soil:
  • We dig over the dahlia beds and fertilise, two weeks prior to planting.
Planting:
  • Plant dahlia tubers horizontally, with eye facing upwards.
  • Place tubers approx. 10cm deep and we space them 40cms apart.
  • If staking, place stake in ground before planting tuber.
  • Tubers can be planted October – December, for most areas two weeks either side of Melbourne Cup day is a good guide.
Watering:
  • In most cases, watering is not required until dahlia plants are 10cm out of the ground.
  • But every year has different weather conditions.
  • A guide is to test the soil with your finger, if it’s a bit dry then water can be added.
Maintenance:
  • When dahlia’s have at least four sets of leaves, they can be pinched out.
  • Pinching encourages more lateral growth and promotes longer stems for cutting resulting in more flowers.
  • When picking flowers harvest when they are almost fully open.
  • The more you pick, the more flowers the plant will produce.
  • Deadhead any damaged/old flowers to encourage the plant to keep flowering.