Leaf amaranth · Rybinsk, Yaroslavl Oblast, Russia
When to plant leaf amaranth in Rybinsk
Main outdoor window
28 Jun - 26 Jul
The window this page is built around.
Timed from last spring frost
1 May
In Rybinsk, on your chosen risk.
Ready to pick
1 Jun - 31 Oct
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 Rybinsk
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
28 Jun - 26 Jul
Held back until the soil is warm enough for this crop. The frost date on its own would say 15 May, which is too cold for it to start.
Harvest
1 Jun - 31 Oct
Leaf amaranth through the year
Against the frost risk in Rybinsk
Why these dates
Sow onto warm soil from two weeks after the last frost and every two weeks after that. Cut the main stem at about 30cm and it branches into a bushier, more productive plant.
Killed at 0C with no margin at all. Sow late, harvest until the first autumn frost, and expect the plants to collapse overnight when it comes.
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. Leaf amaranth are timed for direct sowing 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Rybinsk.
With one correction, which is the note at the top of the page: the offset alone would put this crop in soil that is still too cold for it. Where the frost date and the soil temperature disagree, the dates here follow the soil, because a seed in cold ground either rots or waits, and a sowing made a fortnight later usually overtakes it.
The median frost-free season here is 164 days, against 30 to 45 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Rybinsk
Other vegetables to time
Growing leaf amaranth in Rybinsk
When should I plant leaf amaranth in Rybinsk?
Aim for 28 Jun - 26 Jul in an average year. If you would rather not gamble on the weather, wait until 28 Jun - 26 Jul - by then frost has finished in nine years out of ten.
Can I plant leaf amaranth earlier in Rybinsk?
Frost is finished by about 15 May, but the soil is still too cold. Leaf amaranth will not start until it reaches 18°C (64.4°F), and here that is around 28 Jun. Going in earlier usually means seed that rots or transplants that sit and sulk, and a later sowing catches them up.
When will leaf amaranth be ready to harvest in Rybinsk?
Expect to start picking around 1 Jun - 31 Oct, based on 30 to 45 days to maturity from the planting date calculated for this location.
How much frost will leaf amaranth tolerate?
Killed at 0C with no margin at all. Sow late, harvest until the first autumn frost, and expect the plants to collapse overnight when it comes.