FrostCal

When to Plant Parsley in Idaho

In a typical Idaho location, start seeds indoors Mar 5 – Mar 19, then transplant outdoors Apr 16 – Apr 23. Across the state, the outdoor planting window starts as early as Mar 23 in Lewiston and as late as May 3 in Eagle. 2 cities in Idaho are essentially frost-free and can plant on a year-round schedule.

Method Start indoors, then transplant
Days to maturity 70–90 days

Slow to germinate; start indoors 6-8 weeks before last frost, transplant 1-2 weeks before last frost (biennial, cold-tolerant).

Parsley Planting Dates by City

CityStart indoorsTransplant
BoiseFeb 27 – Mar 13Apr 10 – Apr 17
MeridianFeb 27 – Mar 13Apr 10 – Apr 17
NampaMar 4 – Mar 18Apr 15 – Apr 22
Idaho FallsMar 14 – Mar 28Apr 25 – May 2
PocatelloMar 7 – Mar 21Apr 18 – Apr 25
CaldwellFeb 26 – Mar 12Apr 9 – Apr 16
Coeur d'AleneFeb 25 – Mar 11Apr 8 – Apr 15
Twin FallsMar 5 – Mar 19Apr 16 – Apr 23
LewistonFeb 9 – Feb 23Mar 23 – Mar 30
Lewiston OrchardsFeb 9 – Feb 23Mar 23 – Mar 30
Post FallsFeb 25 – Mar 11Apr 8 – Apr 15
RexburgMar 20 – Apr 3May 1 – May 8
MoscowFrost-free: year-round planting
EagleMar 22 – Apr 5May 3 – May 10
CondaFrost-free: year-round planting
KunaFeb 27 – Mar 13Apr 10 – Apr 17
AmmonMar 14 – Mar 28Apr 25 – May 2
ChubbuckMar 7 – Mar 21Apr 18 – Apr 25
HaydenFeb 25 – Mar 11Apr 8 – Apr 15
Mountain HomeMar 7 – Mar 21Apr 18 – Apr 25
BlackfootMar 10 – Mar 24Apr 21 – Apr 28
Garden CityFeb 27 – Mar 13Apr 10 – Apr 17
JeromeMar 7 – Mar 21Apr 18 – Apr 25
BurleyMar 12 – Mar 26Apr 23 – Apr 30

Showing the 24 most populous of 24 Idaho cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Idaho cities.

Frequently Asked Questions

When should I plant parsley in Idaho?

In a typical Idaho location, start seeds indoors Mar 5 – Mar 19, then transplant outdoors Apr 16 – Apr 23. Across the state, the outdoor planting window starts as early as Mar 23 in Lewiston and as late as May 3 in Eagle. 2 cities in Idaho are essentially frost-free and can plant on a year-round schedule.

When is the last frost in Idaho?

The average last spring frost in Idaho ranges from April 6 in Lewiston to May 17 in Eagle, based on NOAA 1991–2020 climate normals.

How long do parsley take to grow?

Parsley typically take 70–90 days from planting to harvest. Slow to germinate; start indoors 6-8 weeks before last frost, transplant 1-2 weeks before last frost (biennial, cold-tolerant).

Other Crops in Idaho

When to plant parsley in other states

Related Guides