Dahlia Cactus
Gelber Vulcan
-
90-110cm -
5-10cm -
Full Sun
90-110cm 
5-10cm 
Full SunDahlia Gelber Vulcan is a radiant semi-cactus dahlia prized for its large, sunshine-yellow blooms and strong garden presence. Its lightly spiky petals give the flowers a lively, textured look, making it a standout in borders and a brilliant addition to cut flower arrangements. Flowering from mid to late summer through autumn, it delivers months of colour when planted in a sunny, well-drained spot. Growing to around 110 to 120 cm tall, this variety adds impressive height and impact while still working beautifully in mixed planting schemes.
- The best time to plant Dahlias here in NZ is September or October, but can be planted anytime from mid August through to late December.
- Dahlias love sun ,so choose a nice sunny spot in your garden. Ideally a spot that gets at least 4 hours of full sun a day.
- Dahlias will grow in almost any soil, but prefer well drained loamy soil conditions.
- Prepare the ground a few weeks before planting by digging over the soil thoroughly and adding a little well rotted compost and an application of general fertiliser.
- Before planting the tubers, apply stakes (for larger varieties) staking after planting damages roots and tubers.
- Plant your Dahlia tubers about 5-10cm deep and about 50cm apart with the eye facing upwards. Water well and keep moist being careful not to over-water.
For a full overview of how to plant Dahlias visit our Gardeners Guide.
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