The root of Populus tomentosa is rotten and smelly and yellow.
Boxwood planted in May this year to the end of June this year root rot with a bad smell, until the whole plant withered, please advise what is the cause and solutions! Thank you for waiting. The planting environment has more rainfall recently in a place where there is not much sunlight.
Reply: Rain Water should cause too much stagnant water in the roots, the roots can not breathe, rot and die; at the same time, due to root decay, the root nutrients can not be supplied, resulting in the death of the top branches.
The key to summer planting is watering, more water, less water, improper watering, will cause plants can not absorb water and die, strictly prohibit the phenomenon of rotting roots caused by stagnant water in the tree pit, and often loosen the soil to make the soil well ventilated.
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Control methods of wild borer, Chilo suppressalis
The larvae of Populus tomentosa, Populus tomentosa and holly were used as nests to damage host plants, and the damaged leaves showed yellow withered spots at the beginning, and then the whole leaves fell off. Silk spinning binds the leaves and the fallen leaves together, so that the leaves can not be extended, the growth and development is seriously affected, and the whole plant dies when the damage is serious. Shanghai has three to four generations a year, with serious overlap; in the vertical year, it is active in March, pupation begins in mid-April, Eclosion begins in late April, and the first generation in early May
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Cone shape of Populus tomentosa
The following is a guide to how to trim a potted boxwood into a cone about 50 centimeters high. Plants grown in the open field in the garden can also be pruned in the same way, regardless of height. Do not remove the top branch unless the plant is more than 5 cm higher than the required height. The required material is an unpruned potted Jinshu Populus tomentosa with symmetrical growth and obvious tip advantage. Sharp trim scissors. Pruning method 1. In early summer, potted boxwood is placed on the horizontal ground. 2. Standing on potted boxwood
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