Dahlia pinnata
Dahlia
Common names: Dahlia pinnata, Georgine
Photo: W. Bulach · CC BY-SA 4.0 · Source
This description was machine-translated.
Description
The tuberous Dahlia blooms from July until the first frost in a wide range of shapes and colors, making it one of the most reliable cut flowers in the farmer's garden. It grows from overwintered tubers and provides a steady supply of blooms for the vase over many months.
Care instructions
Pre‑treat the tubers in mid‑April in a frost‑free area and plant them after the last frost (mid‑May, week 20) in a sunny spot with nutrient‑rich soil. Water regularly and deeply, especially during heat periods, and consistently remove spent flowers to encourage prolonged blooming. After the first frost in October, dig up the tubers, store them frost‑free and dry for overwintering.
Soil & site
Soil pH
Soil type
humus-rich, well-drained, nutrient-rich
Feeding
Heavy feeder
Companion planting
Good neighbors
carrot family (Apiaceae)
Calendula and Tagetes next to carrots keep the carrot fly away with their scent.
For example Carrotcelery rootDillParsleyCarrot fennelCoriander and 19 more species in the catalogue
Source: classic companion planting (DACH-Gartenpraxis)
Rather not
nightshade family (Solanaceae)
Sunflowers release substances into the soil that inhibit potato tuber growth, and they also compete for water and nutrients.
For example PotatoTomatoSweet pepperCocktail tomatoEggplantCape gooseberry and 9 more species in the catalogue
Source: basic crop-rotation rule
Companion planting is partly traditional gardening lore. Where the reason is known, it is given.
Some of these explanations were machine-translated.
Diseases & pests
2 relevantFrom the knowledge base, automatically linked by affected species. How to spot and prevent them is covered in full in the lexicon.
Phyllopertha horticola
Grubs are the larvae of the garden chafer (Phyllopertha horticola) and usually live for one year, or up to two years in cooler locations, in the soil where they eat roots and tubers.
More on Grub beetleArvicola terrestris
The water vole, commonly called a burrowing vole, lives underground and feeds on roots, tubers and the bark at the root collar.
More on Water voleNotes from real gardens
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From the magazine
Planting summer tubers in spring: dahlias and gladioli only after frost
Dahlias, gladioli and lilies go into the ground only after the last frosts. How to set summer tubers right and stake them from the start.
Overwintering dahlias and gladioli: dig up, dry, store
Dahlias and gladioli are not hardy. How to dig up the tubers in autumn, dry them properly, store them frost-free and divide them.