Causes of yellowing of leaves and flowers of Gardenia jasminoides skills of perennial flowering in potted plants

Gardenia can see pure white fresh flowers in spring and summer. There are many varieties of gardenia. It is a flowering shrub suitable for planting in tropical and subtropical areas. Its flowering period is very short, but it has white flowers with rich fragrance.

Gardenia is a subtropical flowering shrub native to China, it likes the warm and humid environment all the year round, the conservation location should have as much light as possible, and it should be cultivated in slightly acidic soil.

Maintenance of gardenia must keep warm, avoid freezing, it does not like frost or wet places, cultivated soil to choose good drainage, humus-rich slightly acidic sandy soil, to avoid soil alkali, if maintained in this shade for too long, it is easy to infect diseases and insect pests.

If it is a few flowers cultivated in pots, it is necessary to avoid excessive sun exposure and shade properly when the summer temperature is too high. The flowering time of gardenia is generally in spring and summer, and the soil pH of cultivated orange flowers should be kept between 4.5 and 5.5. Potted gardenia should be given acid fertilizer regularly, usually 2 to 3 weeks to ferrous sulfate solution.

Usually water gardenia, to avoid directly using tap water, can be placed in a container for 3 to 5 days before use, of course, you can also directly use Rain Water to water.

If the nephew flower is cultivated in the ground, you can sprinkle some sulfur powder per square meter to cover some pine and oak sawdust regularly, which can increase the acidity of the soil.

When only flowers are cultivated, enough mature manure or compost soil can be added to the bottom of the basin to avoid contact with the rhizome, and the soil can be replaced with appropriate peat soil or compost soil, which can be mixed with appropriate earthworm fertilizer, and the bottom of the rhizome can be covered with some hay or other hay to avoid stem rot.

Friends in the north generally choose to use potted plants for conservation. They can move to a warm place indoors only in winter, put them by a sunny windowsill, have a cool position in summer, and give proper shade in the afternoon. Gardenia can be cultivated with plastic pots, pottery pots and earthen pots.

Pot maintenance of gardenia can be changed every 2-3 years to avoid overcrowded root growth, do not change pots during flowering, otherwise it will lead to bud loss. The temperature in summer is too high, and don't change the basin in the cold season in winter.

Gardenia needs sufficient water during the growing period, and must be cultivated with loose and drained soil, so as to avoid stagnant water and rotten roots, stagnant water should be poured out in time, and some organic fertilizer and water can be given regularly in spring and summer, which is helpful to promote flowering.

Common problems in conserving gardenia:

In winter and spring, when the temperature is colder, avoid moving out of the outdoor maintenance prematurely, otherwise it is easy to cause yellow leaves and tears. At this time, yellow leaves will appear at the bottom, and the temperature will recover slowly after the temperature picks up.

1. Why do buds fall

If during the flowering period of gardenia, excessive watering, or excessive soil drought or exposure to cold, are easy to cause bud loss.

If the conservation environment is suitable for flowers or falling flowers, it may be infected with thrips or aphids, you can spray insecticide every three weeks, spraying 3 to 5 times in a row can be completely removed.

2. Why do the leaves turn yellow and fall?

If the gardenia is only yellow at the bottom of the leaves, it is likely to take root and sprout normally, and they will consume nutrients from the bottom of the branches.

If the leaves at the top also begin to turn yellow, it may be a lack of trace elements, especially iron-deficient yellow leaves or magnesium deficiency. If there is a lack of magnesium in the soil, the leaves at the bottom will begin to turn yellow. Iron yellow leaves are new leaves that begin to turn yellow, which can be relieved by proper pouring of ferrous sulfate.

3. Why do the leaves turn black?

If gardenia is infected with Botrytis cinerea, its leaves will turn black. if it is infected with some honeydew, there is a relatively sticky sweet substance, which is generally excreted by shell insects, so spray it in time, or wipe it with some alcohol with a soft cloth.

4. Why don't gardenias bloom?

Gardenia raised by some friends can not blossom again after flowering, so it can be pruned properly in September and give acid fertilizer regularly, such as ferrous sulfate solution.

If your gardenia turns yellow and brown, it is the normal withering of the flowers, its flowers will be white, slowly turn yellow and then slowly wither, if the sun is particularly abundant, the solution will slowly wither after turning brown, these are all normal phenomena.

Gardenia just bought when do not change pots, gardenia pure white flowers will slowly wither, its flowers slowly from white to yellow, and then will wither and fall. After the flowers have withered, they should be picked in time, and in addition, pay attention to the light, avoid watering too much, and do not move frequently.

After the flowers have withered, it is necessary to add some acid fertilizer, which can be directly irrigated with ferrous sulfate solution, and potassium can also be properly supplemented with some dihydrogen phosphate, which is helpful to promote better flowering next time.