Verbena Care in Hot, Humid Climates: Avoiding Overwatering and Overfertilizing

Verbena Care in Hot, Humid Climates

Verbena thrives in heat but fails when overwatered or overfertilized. In South Texas, where summers are brutal, the key is to mimic the plant's native dry, lean conditions.

Watering

Water only when the top inch of soil is dry. A deep soaking once a week (or less if it rains) is usually sufficient. Constant moisture leads to root rot and the brown, crispy stems you described.

Fertilizing

Stop fertilizing entirely. Verbena prefers poor soil; excess nitrogen produces weak, floppy growth that collapses in heat.

Regional Advice

For a comprehensive guide tailored to South Texas, see the Texas A&M AgriLife Extension article: Verbena for South Texas.

With restrained care, your verbena should recover and bloom through the hottest months.