Bonsai leaves turning brown? Causes & Solutions

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Bonsai leaves turning brown? Causes & Solutions
Bonsai leaves turning brown? Causes & Solutions
Anonim

If bonsai leaves turn brown, a cause analysis will shed light on the issue. Read here about the most common reasons why bonsai leaves turn brown and fall off. You can find out here what you need to do to ensure that your bonsai shines in its green foliage again.

bonsai leaves turn brown
bonsai leaves turn brown

Why do bonsai leaves turn brown and how to fix it?

Bonsai leaves often turn brown due to root rot, nutrient deficiency, sunburn or cold stress. This can be remedied by repotting in fresh bonsai soil, regular fertilizing with special organic fertilizers, slow acclimatization to sunlight or clearing out when temperatures are frost-free.

Why do bonsai leaves turn brown?

The most common cause of brown bonsai leaves isRoot rot. Watering too frequently causes waterlogging. In the wet substrate, the roots rot and no longer transport water to the tree crown. The leaves turn brown, dry up and fall off.

Other causes of brown bonsai foliage include nutrient deficiency, sunburn and cold stress. If the tree lacks nutrients, the leaves initially turn yellow, then brown and die. A similar damage pattern can be observed if you move your bonsai to the balcony without a transition or too early.

What to do if bonsai leaves turn brown?

ImmediateRepotting in good bonsai soil is the best solution when bonsai leaves turn brown due to root rot. If you can rule out root rot as the cause, proceed as follows:

  • Cause of nutrient deficiency: Fertilize the bonsai from spring to autumn with a special organic fertilizer according to the manufacturer's instructions (e.g. Biogold (€12.00 on Amazon)).
  • Cause of sunburn: Acclimatize the bonsai in a partially shaded to shady location for 14 days before it takes its summer place in the sun.
  • Cause of cold stress: Only clear out frost-sensitive bonsais, such as Ficus ginseng, when temperatures rise above 12° at night.

Tip

Autumn leaf fall on deciduous tree bonsai is normal

If the bonsai leaves of domestic deciduous trees turn brown and fall off, there is no cause for concern. A prime example is a hornbeam bonsai, whose leaves turn brown every fall and remain until well into winter. Chestnut, oak and beech also go through the natural process when the deciduous trees grow as trees in a bowl. Next spring the leaves will sprout again.

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