Juniper bushes are hardy, resilient plants identified for enduring tough growing conditions, such as droughts and poor sunlight. Nevertheless, despite their resilience, junipers are prone to several maladies borne from disease and insect infestation that result in browning. Bagworms, spider mites, the fungal disease juniper tip blight, and even dog urine cause the branches and twigs of the bush to lose their vibrant green shade. You can quit a juniper bush from turning brown by very first identifying the lead to and then eliminating the source through insecticides and correct management.
- Hold a piece of white paper under a juniper branch and shake it. Look at any small specks that fall on the paper through a magnifying glass. If you see brown, red, green or yellow eight-legged insects, your juniper has spider mites.
- Spray the bottom of the leaves, where spider mites feed, utilizing a water hose with a high-pressure nozzle.
- Mix three tablespoons of vegetable-oil based soap with 1 gallon of water and add the solution to a spray bottle. Mist the underside of the juniper leaves with the remedy. Inspect the leaves soon after one week and reapply the remedy if necessary.
- Examine your juniper branches for elongated off-white or gray bags of caterpillar larvae, indicating that your juniper has a bagworm infestation.
- Grasp the bags and pull them from the branches. Destroy the bags by fire to prevent spreading.
- Spray the caterpillars that emerged from the sacs with an insecticide containing the lively ingredient bacillus thuringiensis. The caterpillars usually emerge from the sacs in late spring to summer. Spray the juniper every single 10 days until the caterpillars are eradicated.
Juniper Tip Blight
- Examine the twigs and branches of the juniper bush in early spring for brown twigs, dead twigs and twigs lying on the ground, signalling juniper tip blight infection.
- Wipe the blades of your bypass pruners with one component isopropyl alcohol and three parts water. Prune back the contaminated twigs 2 inches into the reside wood.
- Sterilize the blades in among use and ruin the trimmings.
- If your juniper bush is severely overrun with spider mites, discard and ruin it to prevent spreading.
- Spray the juniper bush with pet repellent spray to discourage dogs from urinating on it, which brings about browning.