Welcome to NGA, Hibiscus. You can but I would try any similar npk fert that is described as a slow release fertilizer instead... so you do not have to reapply often. In a pinch, I have used organic compost and composted manure too.
Name: Daisy I Reno, Nv (Zone 6b) Not all who wander are lost
You will have to reapply the Miracle Gro every couple weeks. If your Hibiscus is in a pot, use at half strength.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
President: Orchid Society of Northern Nevada