Candytuft · Mudanjiang, Heilongjiang, China
When to sow candytufts in Mudanjiang
Main outdoor window
16 Apr - 7 May
The window this page is built around.
Timed from last spring frost
7 May
In Mudanjiang, on your chosen risk.
Ready to pick
10-30 Jun
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 Mudanjiang
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.
Sow direct
16 Apr - 7 May
Three weeks before your last frost.
In flower
10-30 Jun
Candytufts through the year
Against the frost risk in Mudanjiang
Why these dates
Sow direct three weeks before the last frost where it is to flower. It has a short season, roughly five weeks, so sow in succession every three weeks for a continuous show. Cut back hard after flowering and a second flush sometimes follows.
Hardy to about -10C, so it can be autumn-sown in zone 7 and milder for late spring flowers. Finishes quickly once the weather turns hot.
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. Candytufts are timed for direct sowing 3 weeks before it, and this page simply resolves those offsets against the frost date computed for Mudanjiang.
Hardiness is not the obstacle here. Mudanjiang is zone 4b, comfortably inside the range this crop is rated for, so an established plant should come through an average winter without protection.
The median frost-free season here is 149 days, against 55 to 75 days to first flower for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Mudanjiang
Other flowers to time
Growing candytufts in Mudanjiang
When should I plant candytufts in Mudanjiang?
Aim for 16 Apr - 7 May in an average year. If you would rather not gamble on the weather, wait until 21 Apr - 12 May - by then frost has finished in nine years out of ten.
When will candytufts be ready to harvest in Mudanjiang?
Expect to start picking around 10-30 Jun, based on 55 to 75 days to maturity from the planting date calculated for this location.
How much frost will candytufts tolerate?
Hardy to about -10C, so it can be autumn-sown in zone 7 and milder for late spring flowers. Finishes quickly once the weather turns hot.