AT A GLANCE
How drought resistant is the Douglas fir?
The Douglas fir is relatively drought-resistant because, as a central root, it can cope with rather dry and nutrient-poor soils. However, it is not adapted to prolonged periods of drought and suffers from frost drought without adequate watering on frost-free days.
How well does the Douglas fir cope with drought?
Douglas firs go relatively well with rather dry, nutrient poor floors right. This is because these trees belong to the heart roots.
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your root system spreads quite far, but at the same time reaches deep into the earth. This means that the storage organs can still supply the tree with water even when the soil surface is completely dry.
How drought resistant are Douglas firs really?
However, both their natural origin and the location requirements show that Douglas firs, in contrast to other woody plants no trees adapted to longer periods of drought are.
- Even though they are less sensitive to drought than spruce, for example, come with us longer periods of drought, when water is scarce even in deep soil layers rightly so.
- Freshly planted Douglas firs must also grow very well until they can cope with temporary water shortages.
Is frost drought dangerous for Douglas firs?
Frost drought stops major risk for Douglas firs dar: Are the conifers illuminated by the winter sun and is the water supply through the blocked by frozen ground, they can no longer absorb the moisture that has evaporated via the needles substitute. In addition, it proves to be disadvantageous that the Douglas fir opens the stomata very early.
Therefore it is important Douglas firs cultivated in the garden to water sufficiently on frost-free days.
Tip
Yellow needles - not necessarily a result of drought
If the Douglas fir needles turn yellow from the middle of the tree, this is not always the result of a lack of water. Usually it is a fungus, the sooty thorn spill. You can tell the difference as follows: During the drought, the buds and young foliage are discarded, only the older needles, which also have a black underside, discolor in the event of fungal infestation exhibit.