Chives · Tin Shui Wai, Yuen Long, Hong Kong
When to plant chives in Tin Shui Wai
Main outdoor window
not outdoors here
The window this page is built around.
Timed from last spring frost
no spring frost
In Tin Shui Wai, on your chosen risk.
First autumn frost
no autumn frost
The far end of the outdoor season.
The average last frost. Half of all years are later than this.
Step by step in Tin Shui Wai
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.
Chives through the year
Against the frost risk in Tin Shui Wai
Why these dates
Sow once and divide every third year. First-year plants are thin; the crop is properly established in year two.
Fully dormant-hardy to -25C. Emerges as soon as soil temperature passes about 5C, often weeks before the last frost.
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. Chives are timed from 8 weeks before that frost for an indoor start, with planting out 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Tin Shui Wai.
Growing chives in Tin Shui Wai
How much frost will chives tolerate?
Fully dormant-hardy to -25C. Emerges as soon as soil temperature passes about 5C, often weeks before the last frost.