When to plant hardneck garlic in Dallas

In Dallas, typical last spring frost is February 20 and typical first fall frost is December 7. Typical last spring frost: February 20. Hardneck garlic in Dallas is a good fit outdoors. Planted in autumn, harvested next summer (about 7–9 months).

Hardneck garlic

How to grow Hardneck garlic Dallas climate Weekly temperatures and windows

Where are you growing?

Comfortable

Hardneck garlic in Dallas is a good fit outdoors. Planted in autumn, harvested next summer (about 7–9 months).

When to plantNovember 4 – December 15

Harvest: June 2 – September 11
Season vs crop: 312 grow days vs 210–270 needed
Typical frost (last spring – first fall): February 20 – December 7

Hardneck garlic in Dallas is a good fit outdoors. Planted in autumn, harvested next summer (about 7–9 months).

Planting conditions

Direct sow
Harvest

Local activity windows for this place and growing method. Dashed lines are typical last and first frost.

Suitable growing days in a row312

Days to harvest210–270 days from planting

Nov 4 – Dec 15

Direct sow

Jun 2 – Sep 11

Harvest

Activity	Window	Notes
Direct sow	Nov 4 – Dec 15	Plant outdoors in this window.
Harvest	Jun 2 – Sep 11	Expected harvest from typical days to harvest.

Direct sow
Harvest

Based on average frost dates (35 seasons (1991–2025)). Adjust a week or two for your conditions.

Planting and growing across the year

Planting is the sow / plant-out window. Growing is daytime air versus this plant’s ideal (17 – 23 °C63 – 73 °F17 – 23 °C (63 – 73 °F)) and tolerable (−5 – 30 °C23 – 86 °F−5 – 30 °C (23 – 86 °F)) ranges.

Ideal / plantable
Tolerable
Too cold
Too hot
Outside window

Planting uses sow / plant-out rules; growing shows daytime air against this plant’s ideal and tolerable ranges.

Key dates

Typical last spring frostFebruary 20

Low-risk last spring frostMarch 12

Typical first fall frostDecember 7

Low-risk first fall frostNovember 13

Frost-free days289

Outdoor sow dateNovember 4

Direct sow windowNovember 4 – December 15

Suitable growing windowNovember 4 – September 11 (312 days)

Expected harvestJune 2 – September 11

How these dates are judged

Ideal conditions: Daytime air from 17 – 23 °C63 – 73 °F17 – 23 °C (63 – 73 °F).
Suitable conditions: Daytime air from −5 – 30 °C23 – 86 °F−5 – 30 °C (23 – 86 °F).
Last frost and first frost: Typical spring and fall frost dates for Dallas, shown in the key dates.
Days to harvest: 210–270 days from planting, from typical days to harvest.
Sowing window: Dated sow and harvest bars use frost dates, soil minima, night limits, and last-sow count-back from typical crop timing. Air ratings on the weekly chart colour only weeks inside that same window — see weekly temperatures and windows.

Other plants for Dallas

Calculated by Plan & Plant. Method. Data 35 seasons (1991–2025).

Frost and suitability dates are typical figures from climate statistics.

Based on 35 years (1991–2025) of ERA5-Land data from Open-Meteo, for an area of about 10 km. Typical dates, not a guarantee.

Dates for Dallas use ERA5-Land cell 32.78, -96.80. How we calculated this · Algorithm 2026-10-season-10.

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