August 30, 2019
August 31, 2019
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they be watered? And is it ok that they are dropping their leaves even the same ones? Can you tell me what zone I’m in? I think it’s 8.
Yes, you are in planting zone 8a. Hibiscus like moist soil, but not wet. So water often enough to keep the soil moist. Dropping leaves could be a sign of overwatering or underwatering.
Have had this plant for about 2 years, and it happened last year too. After blooming quite well and profusely at the beginning of spring, the following buds turn black and fall off, and the plant doesn’t have any more flowers through the summer or fall, just a lot of black buds,. It’s sad and frustrating – what can I do?
Do not allow them to dry out between waterings. They need regular, deep irrigation. Also, be sure to fertilize regularly during the growing season.
These are very heavy feeders. If they do not get fed a few times per year, then they are just lacking in nutrients. These articles will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm
I live in Hawaii. The hibiscus plants are in large pots. There are no pests evident on the buds or leaves but a lot of buds turn yellow and fall off before opening.
This can have a few causes.
The most common is lack of nutrients, or the wrong kind of nutrients. Too much nitrogen, or not enough phosphorus and potassium will cause bloom drop. You can offset by adding nutrients high in phosphorus and potassium, and continue with a high nitrogen feed during growing season when it is not blooming.
Another cause is not enough sun. They will grow very bushy in partial shade, but will not flower as well. They prefer full sun for proper bloom-set.
These articles will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-fertilizing.htm
THE LANDSCAPER AT SEABREEZE CONDO TOLD ME HE CANNOT USE FERTILIZER CONTAINING NITROGEN FROM JUNE TO NOV. ONLY A FEW BLOOMS ON MANY PLANTS. BEFORE PRUNING IN LATE MAY, THERE WERE SO MANY BEAUTIFUL BLOOMS. THEY ARE JUST FULL MOF GREEN LEAVES. WHAT FERTILIZER SAFE FOR SOUTHEAST COAST OF FL?
Hibiscus should be fertilzied with a balanced fertilizer regularly but lightly to avoid overfertilization, which will result in less blooms. Here is the schedule and type of fertilizer
It is very important to take all necessary precautions to ensure that systemics are used correctly. This article will help you with systemic use: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/systemic-pesticide-in-gardens.htm
Alternatively, you can use an organic systemic such as neem oil. This article will help: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
Acids in Rosemary oil have shown promise as a systemic as well, and is used by several companies for organic systemic pesticides.