Provide nutrients before planting
You lay the best foundation for richly blooming dahlias before plants. Improve the earth on Location with ripe compost. Then you do not need to give any further fertilizer in the weeks after.
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Well-known gardening experts recommend putting a teaspoon in each planting hole Horn shavings(€ 32.93 at Amazon *) admit. This gives georgines the best starting conditions for healthy growth and abundant flowering.
For pot dahlias, use good, nutritious garden soil to provide the flowers with nutrients. Occasional fertilizers with organic Flower fertilizer(€ 71.80 at Amazon *) ensure that the plants thrive.
Which fertilizer is suitable for dahlias?
Preferably use organic fertilizers to provide nutrients to georgines. The best are:
- Cattle manure
- Pigeon dung
- Ripe compost
- Horn shavings
You should better avoid artificial fertilizers because they contain too much nitrogen. As a result, the dahlia sprouts strongly, but only develops very thin shoots. Put the plants
hardly any flowers and there is a risk that the few buds will turn brown and rot.Dahlias grown in pots get along well with commercially available fertilizer for bulbous plants. Give the fertilizer according to the instructions, but if in doubt, take less than too much.
From August onwards, dahlias are no longer fertilized
From the end of August you should generally stop fertilizing your dahlias. There is then a risk that the tubers will be over-fertilized.
Overfertilized Dahlia bulbs survive the Winter break in the basement or pot, but start to rot.
Fertilize with Thomas potash in spring
Many gardeners swear by it in the spring before Dahlias planting time Spreading Thomas potash in the garden and thus improving the general health of the soil. The dahlias then develop particularly strong stems and bloom more persistently.
Tips & Tricks
If you have your dahlia with Horse manure want to fertilize, you need to make sure that this manure is well stored. Horse manure contains too much ammonia, which heats up the manure and thus damages the tubers.