Hill Hardy

Family: Lamiaceae Herb

Planting Schedule

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Fragrant as a sunlit coastal breeze, Hill Hardy rosemary fills the garden with a resinous, piney aroma and a clean, savory flavor that lingers on the palate.

Its narrow, deep green needles hold their character through the season, with a pleasantly firm, aromatic texture that shines when used fresh or dried. Grow Hill Hardy for bold, steady performance and a dependable herb that elevates everyday herb blends, infusions, and preservations with its unmistakable character.

Light: Full SunMaturity: 120 DaysHabit: Upright

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Hill Hardy Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	May 4th	Aug 10th	Dec 8th – Jul 15th
Zone 1b	Apr 20th	Jul 27th	Nov 24th – Aug 1st
Zone 2a	Apr 13th	Jul 20th	Nov 17th – Aug 29th
Zone 2b	Apr 3rd	Jul 10th	Nov 7th – Aug 25th
Zone 3a	Apr 3rd	Jul 10th	Nov 7th – Sep 1st
Zone 3b	Apr 7th	Jul 14th	Nov 11th – Sep 21st
Zone 4a	Apr 3rd	Jul 10th	Nov 7th – Sep 24th
Zone 4b	Apr 1st	Jul 8th	Nov 5th – Sep 27th
Zone 5a	Mar 27th	Jul 3rd	Oct 31st – Sep 30th
Zone 5b	Mar 23rd	Jun 29th	Oct 27th – Oct 5th
Zone 6a	Mar 20th	Jun 26th	Oct 24th – Oct 10th
Zone 6b	Mar 14th	Jun 20th	Oct 18th – Oct 16th
Zone 7a	Mar 9th	Jun 15th	Oct 13th – Oct 20th
Zone 7b	Feb 27th	Jun 5th	Oct 3rd – Oct 28th
Zone 8a	Feb 18th	May 27th	Sep 24th – Nov 5th
Zone 8b	Feb 9th	May 18th	Sep 15th – Nov 12th
Zone 9a	Jan 23rd	May 1st	Aug 29th – Nov 26th
Zone 9b	Dec 29th	Apr 6th	Aug 4th – Dec 9th
Zone 10a	—	Oct 1st	Jan 29th – Feb 28th
Zone 10b	—	Oct 1st	Jan 29th – Feb 28th
Zone 11a	—	Oct 1st	Jan 29th – Feb 28th
Zone 11b	—	Oct 1st	Jan 29th – Feb 28th
Zone 12a	—	Oct 1st	Jan 29th – Feb 28th
Zone 12b	—	Oct 1st	Jan 29th – Feb 28th
Zone 13a	—	Oct 1st	Jan 29th – Feb 28th
Zone 13b	—	Oct 1st	Jan 29th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	120
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	35
Harden Off (days)	10

Culinary Notes

Chef's Note

Hill Hardy rosemary is built for heat and time: its needle-firm bite stays aromatic instead of collapsing into greenness. Use it early in the pan to perfume fats, then finish with a squeeze of lemon to keep the flavor from turning woody or resin-heavy.

Best Uses

chop-fresh over roasted potatoes and root vegetables
sizzle it into browned butter for a fast, fragrant sauce
dry it and grind into rubs for lamb, pork, and mushrooms
infuse oil or vinegar for vinaigrettes and pan sauces

Flavor Profile

resinous pine aroma savory, slightly camphorous bite needle-firm, aromatic texture lingering herb finish

Kitchen Pairings

garlic lemon olive oil browned butter lamb mushrooms

Frequently Asked Questions

What pest or disease most often affects Salvia rosmarinus (rosemary) and how can I control it?

Rosemary commonly suffers from root rot and stem dieback when soil stays wet—watch for wilting plus blackened, mushy stems near the base. Improve drainage immediately (loosen soil and avoid overhead watering), then let the soil dry slightly between waterings; remove and discard any badly blackened stems to reduce spread. If you see gray, dusty growth or leaf spotting, thin for airflow and treat early with an appropriate fungicide labeled for herbs.

How often should I water Salvia rosmarinus during its main growing phase?

During active growth (late spring through summer), water deeply only when the top 1–2 inches of soil are dry; in full sun, this is often about once every 7–14 days depending on heat and soil. Aim for even moisture without sogginess—rosemary prefers a dry-to-moist cycle rather than constantly wet soil. In containers, ensure excess water drains freely and never leave the pot standing in a saucer of water.

How do I know when Salvia rosmarinus is ready to harvest?

Harvest when plants are well established—typically after about 90–120 days from sowing—and when stems have enough usable length and the foliage feels fragrant when rubbed. Pick sprigs in the morning; for best regrowth, take no more than about one-third of the plant at a time and cut just above a leaf node. Continue harvesting through the growing season, but avoid heavy cuts late in the season so new growth can harden off.