When to plant parsley in Calgary

In Calgary, typical last spring frost is May 16 and typical first fall frost is September 25. Typical last spring frost: May 16. Parsley in Calgary is a good fit outdoors. The suitable growing window of 151 days covers the 70–80 days this plant usually needs.

Parsley

How to grow Parsley Calgary climate Weekly temperatures and windows

Where are you growing?

Comfortable

Comfortable in greenhouse

Comfortable in a cold frame

Parsley in Calgary is a good fit outdoors. The suitable growing window of 151 days covers the 70–80 days this plant usually needs.

When to plantApril 28 – June 3

Harvest: July 7 – September 21
Season vs crop: 151 grow days vs 70–80 needed
Typical frost (last spring – first fall): May 16 – September 25

Parsley in Calgary is a good fit outdoors. The suitable growing window of 151 days covers the 70–80 days this plant usually needs.

Planting conditions

Direct sow
Grow outdoors
Harvest

Local activity windows for this place and growing method. Blue fill is usually too cold for this plant. Dashed lines are typical last and first frost.

Suitable growing days in a row151

Days to harvest70–80 days from seed

Apr 28 – Jun 3

Direct sow

Jun 4 – Jul 6

Grow outdoors

Jul 7 – Sep 21

Harvest

Activity	Window	Notes
Direct sow	Apr 28 – Jun 3	Plant outdoors in this window.
Grow outdoors	Jun 4 – Jul 6	Plants grow outdoors until harvest.
Harvest	Jul 7 – Sep 21	Expected harvest from typical days to harvest.

Direct sow
Grow outdoors
Harvest

Blue fill is usually too cold for this plant. Dashed lines are typical last and first frost (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 (15 – 21 °C59 – 70 °F15 – 21 °C (59 – 70 °F)) and tolerable (4 – 27 °C39 – 81 °F4 – 27 °C (39 – 81 °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 frostMay 16

Low-risk last spring frostMay 26

Typical first fall frostSeptember 25

Low-risk first fall frostSeptember 15

Frost-free days131

Outdoor sow dateApril 28

Direct sow windowApril 28 – June 3

Suitable growing windowApril 28 – September 25 (151 days)

Expected harvestJuly 7 – September 21

How these dates are judged

Ideal conditions: Daytime air from 15 – 21 °C59 – 70 °F15 – 21 °C (59 – 70 °F).
Suitable conditions: Daytime air from 4 – 27 °C39 – 81 °F4 – 27 °C (39 – 81 °F).
Last frost and first frost: Typical spring and fall frost dates for Calgary, shown in the key dates.
Days to harvest: 70–80 days from seed, 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 Calgary

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 Calgary use ERA5-Land cell 51.00, -114.10. How we calculated this · Algorithm 2026-10-season-10.

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