L’Japanese maple it is a fascinating plant, capable of transforming your garden into an explosion of color. However, as winter approaches, it is essential to take preventative measures to ensure their health and beauty.
Find out how to deal with the cold and ensure your maple continues to thrive, whether it’s in the ground or in a pot.
Take care of this natural wonder and make your garden a true protagonist even in the cold season!
Why is Japanese maple winter sensitive?
Many of you may wonder why the Japanese maple, despite its apparent hardiness, can suffer during the winter.
The superficial roots e the delicate wood make it susceptible to prolonged frosts.
Although specimens in the open ground can withstand temperatures as low as -15°C, potted plants are particularly vulnerable. Adequate protection is essential to ensure their survival.
In the open ground: gestures that make the difference
Apply a protective sequin
The first step to protecting your maple from the cold is to soil cover with mulch. Use a thick blanket of organic materials such as bark, dead leaves or compost.
This layer will protect the roots from frost, also reducing theevaporation of water.
Use a protective sheet
During severe frosts, wrap the overhead portion of the tree with a protective sheet. This fabric lets air pass, preventing cold snaps without retaining moisture, thus avoiding the development of fungi.
Avoid freezing winds
L’location of maple is crucial. If possible, place it away from prevailing winds, which can increase the sensation of cold and dry out plant tissues.
Maples planted near hedges or walls are better protected.
Water before winter
Before the first frosts, make sure the soil is moderately humid. Slightly moist soil retains heat better than dry soil.
Water the foot of the tree generously, but avoid stagnant water.
In pots: specific precautions
Insulate the jar
Terracotta or plastic pots offer little protection against frost. Wrap the container with insulating materials such as bubble wrap, fabric or old blankets.
If possible, place the pot on risers or an insulating mat to avoid direct contact with the frozen floor.
Move the vase
During the winter, place the tree in a sheltered location, such as a cold greenhouse, a bright conservatory or simply against a south-facing wall, to benefit from some residual heat and reduce wind exposure.
Limit watering
Watering potted maples should be moderate in winter to avoid stagnation of the substrate. Check that the soil is not too dry before watering, and make sure that the water does not stagnate in the saucer.
Protect the fronds
The fronds of potted maples are more exposed to temperature variations. If heavy frost is forecast, also wrap the top of the tree with a winter protection sheet.
Mistakes to avoid
When winter caring for your Japanese maple, avoid making certain common mistakes:
- Late fertilization: Do not use fertilizers rich in nitrogen in autumn, as this will stimulate the growth of new shoots sensitive to cold.
- Overprotection: It is important to let the tree “breathe”, removing the protections when temperatures normalize. Too much protection can cause problems.
- Forget the sprouts in spring: Even after winter, stay alert. New shoots are vulnerable to late frosts, protect them if necessary.
