Unless the plants need repotting the soil from HVH is designed for them. In general I try to use a soil that doesn't have added fertilizer and then use an appropriate fertlizer to keep them fed. HVH shows the mix of their fertilizer - but since its so expensive to ship - I try to find the closest option locally.

Now I also frequently just grab a bag of miraclegro and add perlite for aeration and that works fine too, but if it does have fertilizer, then give it a couple months with a weaker than normal application of your fertilizer to avoid any burn.

Thank you for that info! I didn't notice that they provided soil information, I'll take a look. By the way, is there a favorite fertilizer you recommend? I've got Foliage Pro on hand or is there something just for Hibiscus that would be better? Thanks again!

Take a look at the long term fertilizer mix on the HVH site - its got a specific combination around 17-5-24. then look for something close in your area. middle number should be low. I think i saw a cactus or palm fertilizer that was decently close... now if you can't find anything - you can also get the closest option and supplement with others to raise the individual numbers to where you want them. Even a little/weak version of an even fertilizer will help your plant stay healthy.

Thank you so much!