Watering schedule
How often to water Fly Bush (Roridula gorgonias) — the schedule
Also called fly bush, fly catcher bush.
More about fly bush
About Fly Bush
Roridula gorgonias · also called fly bush, fly catcher bush · houseplant
Roridula gorgonias is a resinous South African carnivorous shrub that traps insects on sticky leaves but relies on symbiotic assassin bugs (Pameridea) to digest prey. Grow in bright light with mineral-free water, lean acidic soil, and high humidity. Challenging to cultivate indoors; best for specialist collectors.
Ideal humidity: 60–90%
Watch for — Resin loss / non-sticky leaves: Usually caused by low humidity, insufficient light, or tap-water mineral build-up. Switch to pure rainwater or RO water, increase light, and raise humidity above 60%.
The watering schedule, season by season
Fly Bush is a bog plant adapted to nutrient-poor wet ground — it must sit in a tray of pure water and must never get tap water or fertiliser. The base rhythm for fly bush is keep substrate consistently moist but not waterlogged; water every 2–4 days depending on conditions, but the real interval moves with the season, the light and the pot — so treat the figures below as a starting point and always confirm with the plant itself.
- Spring & summer (active growth): Spring and summer: keep the pot standing in 1-2 cm of distilled or rainwater at all times; top the tray up as it is taken up.
- Autumn (slowing down): Autumn: lower the tray water level as growth slows and (for temperate species) dormancy approaches.
- Winter (rest / dormancy): Winter: keep just damp, not flooded — many temperate carnivores need a cool dormancy with far less water.
Use only rainwater, distilled, or reverse-osmosis water — tap water minerals kill Roridula quickly. Standing-tray method is acceptable but avoid deep-flooding; the roots prefer moisture without anaerobic saturation.
Want this turned into a live reminder that adjusts to your home and the weather? The Growli watering calculator takes your pot size, light and season and returns a starting interval for fly bush in seconds.
How to tell fly bush needs water
A calendar is the worst way to water fly bush. Check the plant and the soil instead — for this species, look for these signals in order:
- The tray has run dry (during active growth it should rarely be empty).
- The peat-based medium feels dry rather than wet.
- Traps or pitchers shrivel or fail to form.
The most reliable single check is the first one on that list. When two signals agree, water; when they disagree, wait a day and look again — under-watering fly bush for a day is almost always safer than over-watering it.
Overwatering vs underwatering fly bush
The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For fly bush specifically:
Signs you are overwatering
- Blackening traps or pitchers from stagnant, warm, mineral-laden water.
- Rotting crown if kept warm and flooded through winter dormancy.
Signs you are underwatering
- Traps go limp and brown; pitchers dry up.
- The medium dries out and the plant collapses quickly.
Tap or bottled mineral water kills fly bush. Its roots cannot handle dissolved minerals — only rain, distilled, or reverse-osmosis water will do.
Water quality notes
Only rainwater, distilled or reverse-osmosis water — never tap, mineral or softened water. This is the single most important rule for fly bush.
Seasonal and environmental adjusters
Every figure above shifts with the conditions in your home. For fly bush, the levers that matter most are:
- Bright light plus the water tray is the whole game — no fertiliser ever goes in the soil.
- In hot weather the tray empties fast; check it daily.
- Temperate species need a cooler, drier winter dormancy, not constant flooding.
Pot choice is part of this too — work out the right size with the pot size calculator, since a pot that is too big stays wet long enough to rot the roots of fly bush.
Fly Bush watering — frequently asked questions
How often should I water fly bush?
Water fly bush keep substrate consistently moist but not waterlogged; water every 2–4 days depending on conditions. Spring and summer: keep the pot standing in 1-2 cm of distilled or rainwater at all times; top the tray up as it is taken up. Winter: keep just damp, not flooded — many temperate carnivores need a cool dormancy with far less water.
How do I know when fly bush needs water?
The tray has run dry (during active growth it should rarely be empty). The peat-based medium feels dry rather than wet. Traps or pitchers shrivel or fail to form. The single most reliable test for fly bush is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.
What does an overwatered fly bush look like?
Blackening traps or pitchers from stagnant, warm, mineral-laden water. Rotting crown if kept warm and flooded through winter dormancy. Tap or bottled mineral water kills fly bush. Its roots cannot handle dissolved minerals — only rain, distilled, or reverse-osmosis water will do.
What are the signs of an underwatered fly bush?
Traps go limp and brown; pitchers dry up. The medium dries out and the plant collapses quickly.
Can I use tap water on fly bush?
Only rainwater, distilled or reverse-osmosis water — never tap, mineral or softened water. This is the single most important rule for fly bush.
Keep reading
- Watering fly bush in the UK — hard vs soft tap water
- Fly Bush care — the full brief (light, soil, humidity, problems, pet safety)
- Watering calculator — get a starting interval for your exact pot and light
- Pot size calculator — the right pot keeps watering forgiving
- Overwatered plant — signs and how to recover it
- Underwatered plant — signs and how to rehydrate it
- Why is my plant wilting? Wet vs dry diagnosis
- How often to water dracaena 'janet craig'
- How often to water dracaena 'lemon lime'
- How often to water dracaena warneckii
- All 6887 watering schedules in the Growli library