Verbena 'Tapien' with abundant flowers but no leaves is likely suffering from overwatering and possible mildew or crown rot. Watering three times a week with a riser sprinkler keeps foliage wet — a recipe for fungal issues. Instead, water deeply once every 5-7 days to encourage deep roots.
Cut plants back to 5 inches, fertilize with liquid or time-release feed, and treat with Green Cure (for mildew) or Serenade (for crown rot) if symptoms appear. A deep soaking less often is far better than frequent light watering for this drought-tolerant perennial.
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