For a single plant a ready to use spray bottle of a contact insecticide like this will do it:
https://www.domyown.com/monterey-houseplant-insect-spray-p-11260.html
For a larger planting where you need to mix your own in a sprayer, this is a similar pyrethroid insecticide:
https://www.domyown.com/dfense-sc-p-1809.html
I had my Tropical Hibiscus outdoors and have brought indoors. I live inMinnesota. It got frost bite a little. The leaves are falling off. What should I do? DoI cut back the branches? Appreciate your help. Thanks Karen
You may cut back any branches that are showing any signs of dying off. Cut back to the part that is still alive. They will recover as long as you keep them out of the cold. Here is an article with more information on their care: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-container-care.htm
Do Cut it back for winter. This is one with the "big dinner plate size blooms" I've munched and soiled the roots.
You should only cut the dead blooms once they are done. In the spring you may prune out any dead growth, but I wouldn't cut them all the way back, as this will hinder the flowering process. Here is an article for more information: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm
Hello, What type of hibiscus is the one shown in the photos I am attaching? It grew up in Italy and was brought to Dublin, Ireland, in June.
Hibiscus rosa-sinensis (Chinese hibiscus)
Hibiscus, unless they are a cold tolerant species, cannot take freezing temperatures.
https://homeguides.sfgate.com/much-cold-can-hibiscus-stand-68229.html
The buds look like they have been cut off about one inch below the bud. It is a clean cut and the buds look healthy.
This is very common for a number of reasons. If the weather has changed quickly, or the plant has been moved, then this can occur. This is also an issue if the plant does not receive adequate light. Underwatering or overwatering may cause this as well as not enough phosphorus and potassium in the soil.
This article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-flowers-hibiscus-blossoms-falling-off-plant.htm
Hi, how would I get rid of fungus gnats in the pots plant soil? I'm thinking about adding new dirt to the pot and getting rid of the old dirt that I currently have in the pot. the bugs are in my hibiscus plants soil. also can I get information on how to water my hibiscus plant in the winter?
When you water, water from the top and never, never let the plant sit in standing water. While it doesn't treat the soil, try yellow sticky traps to rid yourself of flying gnats. Sticky pad traps can be found at hardware stores.
Here's an article about fungus gnats:
https://www.smallfootprintfamily.com/how-to-control-fungus-gnats-organically
Water the hibiscus in winter only when the soil is dry; don't overwater.
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm
I have several different types of hardy hibiscus seeds that I received when I was a member of another garden club. But after I received them, I became chronically ill with kidney and back/legs problems. My godson was my helper but he grew up, got a job and I rarely see him. So I had no one to plant the seeds for me. Well, I'm beginning to feel better and want to plant the seeds if it's not a waste of time. Is there a way to tell if they are still viable? The seeds are approaching 10 years old if not already there. Thank you so much for any advice you can give me about the seeds.
There is no good way to tell, visually, if a seed is viable. There is an easy way to test them, though. Place a few in a very slightly damp paper towel and place them in a dark drawer in a sealed ziplock bag. Check them once per day until you see something happening. If 2 weeks pass and you don't see anything, then you can throw them out. They will not be viable if they haven't started by then.