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Beach Rosemary Bushes Dying: Water, Pruning, Salt Tolerance

Established beach rosemary (3×2') suddenly browning. Causes: overwatering, no pruning, mineral depletion.

Diagnosis

  • Water: 2–3×/week = too much. Weekly max. Rain = no water.
  • Pruning: Never pruned = woody, weak. Prune 1/3 every 3 weeks.
  • Soil: Sand leaches minerals. Feed fish fertilizer every 3 weeks.
  • Salt: Tolerant but not immune. Rinse foliage occasionally.

Action

  1. Dead bush (all brown) = remove.
  2. Declining bush: prune dead, weekly water, fish feed, 3-week prune cycle.
  3. New plantings: 'Arp'/'Hill Hardy', gritty mound, weekly water, prune from youth.

Beach rosemary thrives with neglect (water) but requires pruning and feeding.

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