How to grow mexican bush sage
Overview
Mexican bush sage is a woody, evergreen shrub grown for its dense, grey-green foliage and purple flower spikes. It provides texture and structure in warm, sunny gardens, linking bolder plants together.
Soil Preparation
Prefers slightly acidic to neutral pH (6.0–7.0). Enrich with compost or well-rotted manure before planting. Ensure excellent drainage; heavy clay soils should be amended with gypsum or raised beds.
Growing Guide
Plant in full sun with well-drained soil. Space 60–80 cm apart. Dig a hole twice the width of the root ball, backfill with native soil, and water in well. Mulch lightly but keep away from the stem. Do not overwater; let the soil dry between drinks. In cooler districts, wait until after the last frost to plant out.
Care
Feed with a slow-release fertiliser in early spring and again after pruning. Prune back hard in late winter or after flowering to maintain shape and encourage new growth. Remove spent flower spikes to prolong bloom.
Companion Planting
Pairs well with Westringia, roses, and other salvias. Avoid planting near moisture-loving plants that need constant watering, as this will conflict with the sage's need for dry periods.
Common Pests & Risks
Whitefly and mites may appear in hot, dry weather. Spray with a fine jet of water or use horticultural oil if numbers are high. Keep plants well-spaced to improve air flow and reduce pest pressure.
Troubleshooting
Yellow leaves: overwatering or poor drainage—reduce water and improve soil. Brown leaf edges: frost damage or salt burn—protect from cold and flush soil. Leggy growth: too much shade or not pruned—move to sun and prune hard. Powdery mildew: humid, still air—improve air flow and avoid overhead watering. Few flowers: too much nitrogen or not enough sun—switch to low-nitrogen fertiliser and ensure full sun.