When to Plant Milk Thistle in Zone 5
In USDA zone 5, plant outdoors May 19 to October 16, and expect your first harvest around October 16.
Milk Thistle planting calendar for USDA Zone 5
Direct sow
May 19
Projected first harvest
Oct 16
Milk Thistle is ready to harvest in about 150 days. Dates use USDA zone 5a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 5 means for milk thistle
Average last spring frost
May 5
Average first fall frost
October 1
Those two dates are what set the schedule above. Zone 5 gives you roughly 149 frost-free days, and milk thistle need about 150 days to mature.
Varieties to grow
1 variety of milk thistle in the HomeSown library. Tap any for its full grow guide.
Common problems with milk thistle
What to watch for, with identification and treatment for each
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