
A grower in Southern California (Zone 9) asks about winter dormancy for Venus flytraps (Dionaea muscipula) and the cultivar 'Akai Ryu'. The plants receive about six hours of full sun daily, are watered with distilled water, and grow in a 1:1 peat/perlite mix. Winter temperatures range from highs of 50–80°F (averaging 60°F) to lows of 35–50°F (averaging 45°F), with no snow and occasional rain.
The described temperature range should provide a perfectly adequate dormancy for Venus flytraps. No extraordinary measures are required beyond the natural cooling and reduced daylight. However, watering practices must change dramatically during dormancy.
With cooler temperatures and less light, the plants' water needs drop drastically. Overwatering in cool, wet conditions promotes rot. Water thoroughly in the morning, allowing the medium to dry until it is just barely moist before watering again. In active summer growth, watering every 2–5 days is typical; during dormancy, the same plants may need water only every 7–15 days, often 10 days or more.
Many Southern California growers successfully cultivate Venus flytraps. For region-specific advice, consider joining the FlytrapCare Forum, where members from around the world share dormancy tips and experiences.
Best wishes for a healthy dormancy and vigorous spring growth!
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