Last edited on 2 Nov 2026. View history

sweet Siberian watermelon Sweet Siberian Watermelon

Citrullus lanatus

A variety of watermelon

How to sow sweet Siberian watermelon: Direct seed into soil or peat pots (and transplant pots directly into soil after hardening off)

Sun requirement for sweet Siberian watermelon: Plant in Full Sun

A medium round watermelon with apricot-coloured flesh, tan seeds and full, sweet flavour. It came from Seed Savers in the USA and does well in marginal melon climates. Sow in September or early October, prick out at 3 cm, and transplant at 50 cm once plants have two to four true leaves and the ground is warm.

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Sweet siberian watermelon facts

Lifespan

Annual living and reproducing in a single year or less

Growing sweet Siberian watermelons

  1. Sow seeds in pots 4 weeks before planting out
  2. Dig compost into the bed 2 weeks before planting out
  3. Harden off the seedlings 1 week before planting out
  4. Set or refill beer traps for slugs and snails at planting out every week
  5. Water deeply at the base 1 week after planting out every week
  6. Mulch around the plants 3 weeks after planting out
  7. Hand pollinate the female flowers 6 weeks after planting out
  8. Lift fruit onto a tile or board 4 weeks before first harvest
  9. Cut back on watering as fruit ripens 2 weeks before first harvest
  10. Pick when the tendril by the fruit dries at first harvest every week
  11. Pull out finished plants 6 weeks after first harvest

Plant sweet Siberian watermelons with

morning glory

Video

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Ecological requirements

Data from the FAO EcoCrop database for Citrullus lanatus (Thunb.) Matsumura & Nakai

Family / Taxonomy Magnoliopsida
Dilleniidae
Violales
Cucurbitaceae
Optimal temperature 20 - 35 °C
Absolute temperature 15 - 40 °C
Optimal rainfall 500 - 700 mm/year
Absolute rainfall 400 - 1800 mm/year
Optimal soil pH 6.0 - 7.0
Absolute soil pH 5.5 - 7.5
Crop cycle 0 - 0 days
Max altitude 1000 m
Life form herb, vine
Life span annual
Habit prostrate/procumbent/semi-erect
Optimal soil depth deep (>>150 cm)
Optimal soil texture medium
Optimal soil fertility high
Optimal soil drainage well (dry spells)
Optimal soil salinity low (<4 dS/m)
Photoperiod long day (>14 hours)
Optimal light clear skies to very bright

Licensed under CC-BY-4.0 .

Food and Agriculture Organization of the United Nations (2025) ECOCROP, the crop ecological requirements database. Version 1. https://data.apps.fao.org/catalog/dataset/ecocrop. Accessed through the CGIAR Climate Action Data Hub, https://cgiar-climate-data-hub.github.io/catalog/ecocrop_1/.

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