Harvest Seasons: Why Picking Time Changes the Tea
Winter dormancy concentrates the compounds that make spring tea distinctive.
Tea plants grow in cycles, producing flushes of new leaf separated by rest periods. Which flush a tea comes from affects its character substantially, and in some categories it affects the price by a factor of several.
Why Spring Is Different
Over winter, growth slows or stops and the plant accumulates reserves in its roots. When growth resumes in spring, that stored material goes into the first new leaves, which are consequently richer in amino acids, more concentrated in aromatics, and lower in the bitter catechins that develop under strong sun.
Spring tea is therefore sweeter, more aromatic and less astringent. Summer growth, produced quickly under strong light, is higher in catechins and correspondingly more bitter.
Typical seasonal character
- Spring. Sweet, aromatic, complex, low bitterness. The premium harvest.
- Summer. Stronger, more astringent, less nuanced. Used for robust styles and blends.
- Autumn. Between the two; aromatic with more body than spring, and less delicacy.
- Winter. Rare, only in mild climates; delicate and highly prized where produced.
Regional Calendars
| Region | Main harvests | Notes |
|---|---|---|
| China, green tea | Late March to early May | Pre-Qingming picking is most prized |
| Japan | Late April to May, then summer | First flush is shincha |
| Darjeeling | March, May-June, autumn | First and second flush are distinct products |
| Assam | March to November | Second flush in June is the classic |
| Taiwan, high mountain | Spring and winter | Winter oolong is particularly prized |
| Sri Lanka | Year round | Quality seasons vary by region |
Darjeeling Flushes
Darjeeling is the clearest example of flush mattering enormously. First flush, picked in March, is light, floral and only partially oxidised, drinking almost like an oolong. Second flush, picked in May and June, is fuller, amber and carries the muscatel character the region is known for.
These are not grades of the same product; they are different teas requiring different brewing and suiting different occasions. Buying one expecting the other is a common disappointment.
First and second flush Darjeeling have almost nothing in common except the place. Treating them as versions of one tea is like treating white and red wine as versions of one grape.Rasheeda Kamau
Pre-Qingming
Chinese green teas picked before the Qingming festival in early April carry a substantial premium. The reasoning is sound: cool weather means slow growth, small yields and highly concentrated leaf.
The premium is genuine and it is also a marketing category, and claims of pre-Qingming picking are not always accurate. Buying from a seller who names the specific picking date is the practical protection.
Winter Oolong
In Taiwan's high mountain regions, a small winter harvest is possible and is particularly valued. Cold nights slow growth and concentrate aromatics, producing a floral intensity that spring tea does not quite match.
Yields are small and prices reflect that. For anyone who enjoys high mountain oolong, a winter picking is worth trying at least once for the comparison.
What to Buy When
- Chinese and Japanese green tea: buy in late spring for the current year's harvest.
- Darjeeling first flush: available from April; drink within the year.
- High mountain oolong: spring and winter pickings, bought shortly after.
- Assam and robust blacks: less seasonal, though second flush is worth seeking.
- Puerh and roasted oolong: season matters less; storage matters more.
Follow one tea across seasons
Buy the same tea from a spring and an autumn harvest from the same producer and taste them side by side. It is the clearest possible demonstration of what season does, and it costs no more than any other pair of purchases.
Ageing and Season
For teas intended to age, season interacts with storage. Spring-picked raw puerh is generally considered to age better than autumn material, being more concentrated to begin with, and commands prices accordingly.
Whether the difference justifies the premium is disputed among people with far more experience than most of us have, which is a reasonable indication that the effect is real and not enormous.