Safe to Plant

Hollyhock · Pervouralsk, Sverdlovsk Oblast, Russia

When to sow hollyhocks in Pervouralsk

Main outdoor window

30 Jun - 28 Jul

The window this page is built around.

Timed from last spring frost

19 May

In Pervouralsk, on your chosen risk.

Ready to pick

1 Jul - 31 Aug

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 Pervouralsk

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

30 Jun - 28 Jul

Six weeks after your last frost.

Move to final position

6 Oct - 3 Nov

20 weeks after your last frost.

In flower

1 Jul - 31 Aug

Frost tolerance
Very-hardy
Damaged below
-25°C (-13°F)
Days to flowering
340–390
Hardy to
Zone 3a–9a
Min soil temp
15°C (59°F)
Spacing
60 cm
Sowing depth
5 mm (0.2 in)
Sun
Full

Hollyhocks through the year

Against the frost risk in Pervouralsk

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Frost risk Sow direct Plant out Harvest Today

Why these dates

Sow in early summer, six weeks after the last frost, and move the young plants to their final position in autumn against a sheltered wall - they need the support and the reflected warmth. Flowering follows the next July. Cut the spike down after flowering and it often behaves as a short-lived perennial.

Hardy to about -25C over winter as a crown. Wind, not cold, is what breaks it, and a plant in the open without a wall behind it rarely reaches its full height intact.

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. Hollyhocks are timed with planting out 20 weeks after it, and this page simply resolves those offsets against the frost date computed for Pervouralsk.

Hardiness is not the obstacle here. Pervouralsk is zone 3b, comfortably inside the range this crop is rated for, so an established plant should come through an average winter without protection.

This is a two-season crop, so the dates above describe a sowing in one year and a flowering in the next. The plant spends the winter in the ground as a small rosette, which is why the frost-free season in Pervouralsk does not limit it the way it would limit a tomato: it is not trying to finish before the cold arrives, it is trying to be well enough rooted to sit through it. Sowing too late is the real risk, because a plant that goes into winter undersized often fails to flower at all the following year.

See every crop timed for Pervouralsk →

Growing hollyhocks in Pervouralsk

When should I plant hollyhocks in Pervouralsk?

Aim for 30 Jun - 28 Jul in an average year. If you would rather not gamble on the weather, wait until 11 Jul - 8 Aug - by then frost has finished in nine years out of ten.

When will hollyhocks be ready to harvest in Pervouralsk?

Expect to start picking around 1 Jul - 31 Aug, based on 340 to 390 days to maturity from the planting date calculated for this location.

How much frost will hollyhocks tolerate?

Hardy to about -25C over winter as a crown. Wind, not cold, is what breaks it, and a plant in the open without a wall behind it rarely reaches its full height intact.