My hibiscus plants are turning yellow and dying – they are 3 years old and huge. What do I do? they are going fast.

Question

We have had them 3 years; have had a very hot dry summer in Arizona.

Answer 1

These are very heavy feeders. If they do not get fed a few times per year, then they are just lacking in nutrients. These articles will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm

https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-fertilizing.htm

https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm