A hibiscus plant that may have been damaged by contractors rinsing something into the soil about a month ago. All leaves are yellow and wilting. Buds bloomed briefly but not as usual. I'm afraid it's going to die.
If there was something placed into the soil, the best thing you can do is work to wash it back out. Increase watering to the damaged soil. You will want to flood the area at least once a week. This will help leach away whatever harmful chemical was put in the soil.
This will, unfortunately, put the plant at risk for root issues. But as hibiscus tend to be hardy, it should be able to handle it ok. Good luck!
How can we use Rootstar solution for rooting? May I know the proper rooting process for Hibiscus plants?
It appears that this product is a soil conditioner, that makes the potting medium more cutting friendly when it is mixed in the soil.
This article will help you with growing hibiscus from cuttings:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-propagation.htm
How do I plant my hibiscus? Which part is up?
If you are talking about the seeds, you do not need to worry about which end goes up. The seedling has a built in sense of gravity and will send roots down and leaves up regardless of which direction the seeds are planted.
I am talking about dry plants I sent for. Can't tell roots from the tops.
I planted and hope they aren't upside down! Thanks anyway.
I have 18 hibiscus plants in my front yard. I cannot take them indoors. I live in Summerville, SC and we do have a lot of nights below freezing. I was told when I purchased them that I could cover them with plastic bags for the winter to keep the frost from killing them. Will this work?
Do not wrap it in plastic, as this can harm it. You can wrap it in burlap or fleece, or simply mulch the roots very well.
These plants aren't too picky with regards to soil, as long as it's well draining. Potted plants will respond well to a potting soil and compost mix, while those outdoors can be planted in soil that's been amended with compost or other organic matter.
Can you separate hibiscus plants?
Unless they are "growing" by putting out suckers (stems from the ground), you cannot divide them. You would be better off pruning to control their size, should overgrowth be the case. This article will help with that:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm
If you are simply wanting to produce more plants, this article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-propagation.htm
You should plant the plant at the same level that it grew in the pot. If it is bare rooted and is not in a pot, you should be able to see a faint line above the root system that indicates where the plant was planted when it was in the soil.
To plant, dig a hole, place the plant into the hole so that it is sitting at the proper depth. Then backfill over the roots. Pat the soil down well (some people even step on the soil) to collapse any air pockets. Then water thoroughly.