Dahlia Calvi grow and care – herbaceous geophyte of the genus Dahlia in group Dahlia Semi cactus, Dahlia Calvi perennial deciduous plant that used as ornamental plant and also as cut flower, can grow in subtropics, mediterranean, desert, temperate, tropics climate and grow in hardiness zone of 8-11, if the tubers take outside of the soil it can grow in the winter in hardiness zone of 2-7 and 12+.
Leaves color green shape can be elliptic to lanceolate or deeply lobed the edge can be serrated, leaves organized in pinnate growth.
Dahlia Calvi flower
Flower color is red with little yellow in the middle in the base of the petals, flowers multi petals and petal shape narrow and the edge of the petals and create cylindrical like cone all together looks likes big soft spines.
In cold area to take the bulb in the winter out of the ground, well drain soil,
What is the best way to start growing? Plant / Tuber / Bulb
Is it necessary to graft or use vegetative reproduction? Yes in order to get specific cultivar
Difficulties or problems when growing: Rotten bulb, nitrogen cause problem with the flowers
Recommended planting season? Spring / in cold place mid spring
Pests and diseases: Aphids, snail, slugs
Pruning season: Winter
How to prune: In the end of the season in cold area to cut all the leaves and pull the bulb, in warm place just to cut the dead flowers and leaves
Size of the plant? 0.3-1.5 m, sometimes can be more
Growth speed in optimal condition: Medium growing
Water requirement: Average amount of water
Light conditions in optimal condition for growing: Full sun
Is it possible to grow indoor as houseplant? No
Growing is also possible in a planter /flowerpot / containers: Yes
Bloom season? Spring / Summer / Autumn
General information about the flower: Red flowers with little yellow in the middle in the base of the petals, flowers multi petals and petal shape narrow and the edge of the petals and create cylindrical like cone all together looks likes big soft spines.