If yellow leaves suddenly appear on a plant, its owner immediately begins to ponder the cause. Because he knows that most plants need green leaves, the chlorophyll, which provides life energy. The winter-blooming Christmas roses are no exception.
Why does a Christmas rose get yellow leaves?
In winter, almost at the same time as the flowering period begins, every Christmas rose gets yellow leaves. Becausethe old specimens wiltto make room for new growth. But drought andwaterlogging as well as diseases and pests can also cause some leaves to turn yellow.
What should I do with old yellow leaves?
You should leave the yellowish leaves on the perennialuntil the flowering period But then you can completely cut off the old leaves of the snow rose, as the plant is called. Because it is susceptible to fungal diseases and offers shelter to snails, which eat the new green shoots as a thank you. In addition, the pretty white flowers look much better when they are not framed by unsightly leaves.
What can I do against dryness and waterlogging outdoors?
If you always plant every Christmas rose (Helleborus niger) and every spring rose inpartial shade, in loose, permeable soil, then you will hardly have any problems with your water balance. Support them by leaving the fallen leaves of neighboring deciduous trees or by targeting the root areamulchingYou should also only cut the old leaves of the perennial when the flowers open. Watering Give the Christmas rose a little water in winter times when there is little rain, but only on frost-free days. In sunnier locations it may be necessary to water even on hot summer days.
How do I properly water a Christmas rose in a pot?
The Christmas rose needs a pot with a large drainage hole and loose, permeable soil. Watering must be done as needed:
- more often in summer and water more extensively
- in winteronly veryeconomical
- let the top layer of soil dry in between
- Empty the planter/coaster promptly
If the Christmas rose in the pot has soil that is too wet and therefore already has yellow and brown leaves, it can help to repot it immediately in fresh soil.
What diseases and pests cause yellow leaves?
The most common isblack spot disease. The leaves of the Christmas rose develop black spots, become increasingly yellow around them and eventually die. Immediately cut off all the leaves and dispose of them as residual waste. If he althy leaf stems rot and break at the base in spring and the affected leaves turn yellow and die as a result, you are dealing withStem root rot. Finally, a lice infestation can also weaken Christmas roses and cause some yellow leaves. However, it usually remains manageable and does not need to be fought.
Tip
Leave the green flowers
The white flowers of the Christmas rose take on a greenish tone after fertilization. Don't cut off the green flowers! They carry out photosynthesis and provide the plant, which is leafless at the time, with valuable energy.
