1. Reason: Watering unreasonable may cause it leaves yellow.Watering too much, too often will make the root water, water absorption capacity decreased; Too little water will reduce the moisture in the soil.It will lead to less water absorption by roots and yellow leaves.
2. Treatment: Watering too much water should be reduced, to keep the soil warm and humid can be, it should be cut off the rotten roots and yellow leaves; If you water too little, you should increase the amount and frequency of watering.Watering once every 2 to 3 days in the growing period.
1. Reason: It is important to repot hibiscus flowers regularly, but it is not appropriate to repot them at the wrong time, such as during their flowering or vigorous growth period.Because the nutrients needed for metabolism are especially high at this time, repotting may cause the roots to fail to get enough nutrients as scheduled, resulting in yellowing of leaves.
2. Treatment: attention should be paid to the timing of repotting.It should be kept in a warm environment and wait for it to recover.The yellowed leaves should be cut off in time.
1. Reason: When suffering from red spiders, whiteflies, aphids and other pests, the leaf juice will be sucked dry, leaf nutrient loss, will cause the leaves to wilt, yellow, and eventually fall off.
2. Treatment: When found pests should be the first time spraying propargite and other organophosphorus pesticides for control.For the branches and leaves that can not be saved, even the plants should be abandoned decisively to prevent more pests and diseases.
