I have just purchased 4 hibiscus plants. Should I plant them in shade/sun?
My hibiscus are very leggy. I need to promote leaf growth. I use Miracle Grow every 2-3 weeks in the late spring and summer months. Can you suggest something to get leaf growth?
It sounds like they are not getting enough light or perhaps have not been pruned lately. They are usually pruned in spring, though light trimming for indoor plants can be done anytime, if needed. Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm
What kind of fertilizer do you use on Hibiscus planted outside?
Use a low nitrogen fertilizer or a high phosphorus fertilizer to help it bloom.
I have a hibiscus (rosa sinensis) that refuses to flower. . . . not even a bud. I water it and fertilize it faithfully but it is becoming an exercise in futility. There is no evidence of insect infestation whatsoever. Please help before I discard the plant.
It sounds like the plant has too much nitrogen. Balance it with phosphorus, which helps with blooming. Use a "bloom booster" fertilizer or add some bone meal to the soil to help add some phosphorus.
I have these little brown bumps on the stems of my hibiscus tree.
It sounds like either scale or mealybugs are affecting your plant. This can be treated with neem oil. Here are some articles that should help: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm
https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm
All the leaves have holes in them. A friend told me to put some water in a spray bottle and add some dish liquid and spray the leaves. I've been doing this for a couple weeks and the flowers still have not bloomed.
Are the holes making the leaves look similar to Swiss cheese? If so, this could be attributed to spider mites. Damage like this can also be attributed to slugs/snails or Japanese beetles. Neem oil may help. These articles will also provide some suggestions:
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm
https://www.gardeningknowhow.com/plant-problems/pests/facts-about-slugs-and-how-to-kill-garden-slugs.htm
https://www.gardeningknowhow.com/plant-problems/pests/organic-snail-control-how-to-control-garden-snails.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/japanese-beetles.htm
I need to share a part of my hibiscus plant, which is pretty big now, with a friend. When is a good time? We live in northeast Maryland.
Unless they are "growing" by putting out suckers (stems from the ground), you cannot divide them. However, some types of hardy hibiscus can be divided if there is more than one trunk or stem, and this is usually done so in spring by cutting the plant in half. Stick a shovel in the middle of the plant between the stalks and cut straight down into the root ball. Then dig out from around the plant (about a foot around). Pop them up out of the ground and then replant.
If you simply wish to share a pice of the plant, the overall majority are best propagated through cuttings. This article will help with that: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-propagation.htm
If the plant is getting too large, you would be better off pruning to control the size. This article will help with that: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm