Thyme · Hyesan, Yanggang-do, North Korea
When to plant thyme in Hyesan
Main outdoor window
15 May - 5 Jun
The window this page is built around.
Timed from last spring frost
15 May
In Hyesan, on your chosen risk.
Ready to pick
13 Aug - 12 Sep
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in Hyesan
Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.
Start indoors
20 Mar - 10 Apr
Eight weeks before your last frost, under cover or on a windowsill.
Plant
15 May - 5 Jun
Around your last frost.
Harvest
13 Aug - 12 Sep
Thyme through the year
Against the frost risk in Hyesan
Why these dates
Very slow from seed and best started indoors well ahead of the season, or simply bought as a plant.
Survives -18C. As with oregano, waterlogged winter soil is the real threat.
Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Thyme are timed from 8 weeks before that frost for an indoor start, with planting out 0 weeks after it, and this page simply resolves those offsets against the frost date computed for Hyesan.
Growing thyme in Hyesan
When should I plant thyme in Hyesan?
Aim for 15 May - 5 Jun in an average year. If you would rather not gamble on the weather, wait until 27 May - 17 Jun - by then frost has finished in nine years out of ten.
When will thyme be ready to harvest in Hyesan?
Expect to start picking around 13 Aug - 12 Sep, based on 90 to 120 days to maturity from the planting date calculated for this location.
How much frost will thyme tolerate?
Survives -18C. As with oregano, waterlogged winter soil is the real threat.