The Q&A Archives: pink jasmine

Question: i have had a pink jasmine about 4 weeks. it is about to stop blooming. leaves have and are turning brown and dropping. it is in a greenhouse. it has been repotted. i left the support system in place that was there at purchase. i water about every 4 days. it was purchased at st louis botannical gardens. any suggestions will be greatly appreciated.

Answer: There are several reasons this may be happening. First of all, this plant prefers cooler temperatures (55 to 60 degrees is about right) and humidity when it is blooming, so your greenhouse may be too warm and/or dry for it. Next, you may be over watering -- especially if you repotted it. It needs more water in the summer when it is actively growing. Right now, keep the soil barely damp like a wrung out sponge, not saturated or sopping wet. Use your finger to check the soil and see if you need to water. Next, it may be showing signs of cold damage if it was exposed to cold air on the way home from the store. Another possibility is it may have a problem with spider mites -- you would see fine webbing along the stem or under the leaves; these can be treated with insecticidal soap per the label directions. Or, it may be showing signs of transplant shock if you moved it to a substantially larger pot or used a soil mix very different from the mix it came in originally. This plant blooms for a long period in late winter to early spring and then stops blooming; if it has lost a lot of foliage and you need to cut it back, the time to do so is immediately after it blooms. I hope this helps.

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