Slow-Growing Rosemary and Basil in Zone 10-11: Sun, Fertilizer, Pruning

Light Requirements

• Both: Morning sun essential (eastern exposure).
• Basil: Needs all-day sun after morning exposure.
• Current issue: 6-7 hours direct sun may be too intense without morning priority.

Container Management

• Basil roots become woody quickly; repot annually.
• Prune basil every 3 weeks: cut each branch 1/3 down from top.
• Rosemary: water very sparingly; never soggy.

Fertilization Fix

Lack of fertilizer is likely the primary issue. Apply organic fish emulsion or fish/seaweed every 3 weeks (available at nurseries/health food stores). This alone can dramatically improve growth.

Pruning Protocol

1. Basil: Prune 1/3 from top down every 3 weeks; remove flower buds.
2. Rosemary: Light pruning same schedule; maintains health and shape.