Why Is My Heliotrope Dying?

There's a good chance you are overwatering. Overwatering can cause roots to rot which means the leaves don't have water and nutrition being delivered up to them with out a root system. That's why an overwatered plant will often look underwatered as the leaves wilt even with saturated soil..

Why is my heliotrope turning brown?

Fungal pathogens will cause the plant leaves to shrivel and turn brown. Fungus is a constant threat in hot, moist conditions.

How often should I water my heliotrope?

In most areas, this means that you should water plants every other day, most especially during droughts or dry spells and fertilize potted heliotropes once every two weeks with a liquid fertilizer for flowering plants.