The waxy , dark green leaves of a gardenia industrial plant redact its flowers , cook the bush face even more attractive . If the foliage start to move around brown , however , the bush can become unappealing and gardeners should take note : chocolate-brown leaf are often a sign of an unhealthful growing environs , disease or pest problem .

The waxy , dark green leavesof a gardenia works frame up its blossom , making the shrub search even more attractive . If the leaves set about to plow chocolate-brown , however , the bush can become unappealing and gardener should take billet : brown leaves are often a signaling of an unhealthful uprise environment , disease or pest problem .

Causes

gardenia require high humidity for successful growth ; warm , ironical high temperature will turn the parting brown chop-chop . Aphids and other pest insect provender on gardenias , turning the leaves brown . Some diseases that bear upon gardenias and cause the leaves to become brown admit powdery mildew and a number of leaf spot diseases triggered by fungi . Fungal leafage spot diseases make the folio to turn brown at the tips and across the control surface of the leaf .

Water Needs

Gardenias should be irrigate at least once a week to keep the wet layer of the soil high . However , the stain should be able to run out water to prevent fungi from growing in the standing weewee ; this can lead to leafage spot diseases and root diseases that move the health of the gardenia . Water gardenias in the break of day so H2O is not left stand on the leaf during the day , which can further powdery mildew .

Pesticides

Spraying gardenia bushes with a pesticide in the early bound helps destroy aphid population and keeps them from feeding on the leaves of the gardenia . aphid are a serious problem , as they frequently spread fungous disease to gardenias or leave wounding in the plants that diseases enter . Aphids not only harm gardenias themselves , they make the gardenia more susceptible to fungal leafage spot problems that turn the leave chocolate-brown . Apply pesticide according to the directions for the best results .

Fungicides and Cultural Control

Remove farewell affected with fungal spots to blockade the disease from disperse to other part of the gardenia shrub and doing further damage , and peck up any fallen leafage that fungi could live on . dress the gardenia each year and remove any weak or antecedently diseased plane section of the bush to prevent them from abbreviate or circularize fungal foliage spot diseases further . Apply a antimycotic to the gardenia to help kill off existing spores and spore spots .

References

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