When to Plant Calla lilies in Pushkin, St.-Petersburg, Russia

Step by step in Pushkin

Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.

Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.

Plant the rhizomes

24 May - 21 Jun

Delayed by a soil-warming estimate derived from historical air temperatures. The frost-only date would be 21 May. Measure your soil before planting. This crop is never fully dormant, so it cannot be planted bare-root in winter.

In flower

1 Jun - 31 Aug

Frost tolerance

Half-hardy

Damaged below

-5°C (23°F)

Hardy to

Zone 8a–11a

Min soil temp

12°C (53.6°F)

Spacing

40 cm

Sowing depth

80 mm (3.1 in)

Sun

Partial

Calla lilies through the year

Against the frost risk in Pushkin

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Calla lilies

Frost risk Plant Harvest Today

Seasonal context

Rainfall and the growing season in Pushkin

July has the highest average precipitation (97 mm); February has the lowest (42 mm). Compare this pattern with the planting windows and your water supply.

Jan 49 mm

Feb 42 mm

Mar 43 mm

Apr 55 mm

May 71 mm

Jun 92 mm

Jul 97 mm

Aug 96 mm

Sep 65 mm

Oct 76 mm

Nov 69 mm

Dec 58 mm

During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.

Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.

Monthly growing conditions in Pushkin

Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.

NASA POWER climate averages, 1995–2024
Month	Average low	Average high	Frost days
January	-12.2°C (10.1°F)	-6.7°C (19.9°F)	30.3
February	-11.7°C (11°F)	-5.4°C (22.3°F)	27.8
March	-7.1°C (19.3°F)	-0.5°C (31.1°F)	29.7
April	-0.8°C (30.5°F)	8.1°C (46.6°F)	18.6
May	4.8°C (40.6°F)	15.1°C (59.3°F)	3.9
June	10°C (50°F)	19.6°C (67.3°F)	0.0
July	12.9°C (55.1°F)	22°C (71.6°F)	0.0
August	11.5°C (52.7°F)	20.6°C (69°F)	0.0
September	7.2°C (44.9°F)	15.1°C (59.2°F)	0.5
October	2°C (35.7°F)	7.3°C (45.1°F)	9.9
November	-3.7°C (25.3°F)	0.2°C (32.3°F)	21.8
December	-9.4°C (15.1°F)	-4.6°C (23.7°F)	29.0

For calla lilies, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.

Local growing check

Before choosing calla lilies for Pushkin

July is the wettest month in the rainfall grid, averaging about 97 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.

The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.

Before you plant calla lilies

Use the calendar to plan ahead, then check the conditions in your own garden.

Measure the soil at sowing depth. Aim for at least 12°C (53.6°F); the calendar estimates soil warmth from air temperatures and cannot measure your bed.
Check the local overnight forecast before planting out. Delay planting or keep protection ready if frost is forecast, even after the historical last-frost date.
Check mature size, drainage and cultivar suitability before choosing a permanent position. A suitable planting window does not guarantee long-term survival or fruiting.

Distinguish white arum lily from other coloured calla hybrids

Choose suitable light and an organic-rich moist position, with protection from intense sun where needed. Allow room for a spreading clump and check local invasive-plant guidance before planting beside waterways.

Assess whether the plant is evergreen or seasonally dormant in your conditions and adjust care accordingly. The plant contains irritating calcium oxalate and is not edible; keep it from children or pets that may chew foliage. Record winter survival and flowering separately.

What to record this season

Did the specific calla type remain healthy under the site's moisture and winter conditions? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.

Further reading: NC State Extension: Zantedeschia aethiopica . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.

The reference describes plant identity and cultivation. Its regional calendar months and hardiness observations do not validate the calculated dates for another location.

How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy

Why these dates

Choose suitable light and an organic-rich moist position, with protection from intense sun where needed. Allow room for a spreading clump and check local invasive-plant guidance before planting beside waterways.

Check the named variety and local forecast before exposing young growth. The catalog cold-damage figure is a reference, not a guarantee: plant age, acclimatisation, wind and the duration of a freeze affect damage.

Calla lilies are planted once and then left in place, so there is no sowing offset to resolve. Nor is there a dormant season to plant into: this crop keeps its leaves and keeps growing through the winter, which is exactly why cold damages it. The window on this page therefore waits until the last frost in Pushkin has passed and the soil has begun to warm, giving the roots the longest possible run before the cold returns.

Pushkin sits in zone 4b, which is colder than the catalog range. Check a locally proven cultivar and a realistic protection plan before planting. The calculated dates do not confirm that this crop is suitable here. Check cultivar requirements and local growing experience before planting.

See every crop timed for Pushkin →

Nearby

Calla lilies in places close by

Kolpino 12 km Gatchina 21 km Saint Petersburg 25 km Peterhof 34 km Petrodvorets 39 km Sosnovyy Bor 76 km

Also in Pushkin

Other flowers to time

Tulips very hardy Daffodils very hardy Dahlias tender Sunflowers tender Crocuses very hardy Peonies very hardy Calendulas hardy Hyacinths very hardy Sweet peas hardy Pansies very hardy Snowdrops very hardy Zinnias tender

Growing calla lilies in Pushkin

Can I grow calla lilies in Pushkin?

The calendar estimates a planting window, not a guarantee of success. July is the wettest month in the rainfall grid, averaging about 97 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.

When should I plant calla lilies in Pushkin?

Aim for 24 May - 21 Jun in an average year. If you would rather not gamble on the weather, wait until 30 May - 27 Jun - by then frost has finished in nine years out of ten.

Can I plant calla lilies earlier in Pushkin?

The historical frost estimate is 21 May. For Calla lilies, an air-temperature model estimates soil warmth of about 12°C (53.6°F) around 24 May. This is not a soil measurement or a forecast. Check your bed at sowing depth; cold, wet conditions can slow growth and increase decay risk.

When might calla lilies flower in Pushkin?

The estimated period is 1 Jun - 31 Aug, based on 100 to 130 days from the modeled planting date. Cultivar, planting material and growing conditions can change this interval; check the plant as well as the calendar.

How much frost will calla lilies tolerate?