When to plant
Plant in spring after last frost. Sage is a hardy perennial in zones 5–8. It tolerates moderate frost and can overwinter outdoors in most climates. The second year onward produces the most vigorous harvests.
Soil & site
Well-drained, lean soil is best — sage, like rosemary, is a Mediterranean herb that thrives in conditions that would stress most plants. pH 6.0–7.0. Sandy or loamy soil with excellent drainage. Avoid rich, clay-heavy soil.
Feeding
Very light feeder. One application of balanced fertilizer in spring. Over-feeding produces lush but weakly flavoured growth. In containers, a slow-release granule in spring covers the whole season.
Common problems
Root rot from overwatering (main killer of sage in home gardens). Powdery mildew in humid, crowded conditions. Spider mites in dry weather. Slugs on young plants. Sage is generally pest-resistant once established.
When to harvest
Sage is ready to harvest once the plant is well established (second year onwards for best yields). Leaves should be silver-green, velvety, and strongly aromatic when rubbed. Pick before or just after flowering for peak flavour.
How to harvest
Cut stems back by up to one-third just above a leaf pair. Don't cut into old, woody stems — they don't regenerate well. After flowering, cut the plant back by half to prevent it going woody. Sage can be harvested lightly year-round in mild climates.
Storage & use
Fresh sage keeps 1–2 weeks in the refrigerator wrapped in a damp paper towel. To dry: hang bunches upside down or spread on a screen in a warm, well-ventilated spot for 2 weeks. Dried sage keeps its flavour for 1–2 years in a sealed jar. Sage butter (sage blended into softened butter) freezes well for months.
Companion planting
Sage deters cabbage moths and carrot flies. It pairs well with rosemary in an herb bed.
Useful for growing sage
A few things that make this one easier — chosen for this plant, not a generic list.
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