Watering schedule
How often to water Artillery Plant (Pilea microphylla) — the schedule
Also called Artillery Plant, Artillery Fern, Rockweed, Gunpowder Plant, Angeloweed.
More about artillery plant
About Artillery Plant
Pilea microphylla · also called Artillery Plant, Artillery Fern · houseplant
The artillery plant (Pilea microphylla) is a fine-textured, fern-like trailing houseplant in the nettle family, named for the way it puffs out pollen. It wants bright indirect light, consistently moist soil, and humidity above 50 percent. ASPCA lists it as non-toxic to cats, dogs, and horses, making it a genuinely pet-safe choice.
Ideal humidity: 50-70%
Watch for — Leaf crisping and drop: Caused by letting the soil dry out fully, low humidity, or hot direct sun. The tiny leaves are unforgiving of drought. Keep soil evenly moist and humidity above 50 percent.
The watering schedule, season by season
Artillery Plant is a moisture lover — it never wants to dry out fully, and dry air sheds fronds faster than anything. The base rhythm for artillery plant is when the top 1-2 cm (about half an inch) of soil is dry, 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 soil evenly, lightly moist at all times — check every 2-3 days and water before the surface dries.
- Autumn (slowing down): Autumn: growth slows a little, so check every few days rather than daily, but never let the rootball dry out.
- Winter (rest / dormancy): Winter: still keep barely moist — a fern that dries out in a centrally heated room crisps up within a day or two.
Keep the soil consistently moist but never waterlogged. This species is notably finicky and sensitive to BOTH overwatering and underwatering: soggy soil triggers root rot, while a single dry-out causes the tiny leaves to crisp and drop. Water a little less in winter.
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 artillery plant in seconds.
How to tell artillery plant needs water
A calendar is the worst way to water artillery plant. Check the plant and the soil instead — for this species, look for these signals in order:
- The very top of the compost feels dry to the touch (do not wait longer than this).
- Fronds start to look slightly limp or lose their fresh sheen.
- Frond tips begin to pale or curl before going crispy.
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 artillery plant for a day is almost always safer than over-watering it.
Overwatering vs underwatering artillery plant
The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For artillery plant specifically:
Signs you are overwatering
- Yellowing, mushy crowns and a sour-smelling pot — even a moisture lover rots if waterlogged.
- Blackened frond bases at soil level.
- Fungus gnats thriving in permanently saturated compost.
Signs you are underwatering
- Crispy brown frond tips and edges — the classic dry-air / dry-soil fern signal.
- Wholesale frond drop after the rootball shrinks away from the pot sides.
- A faded, washed-out look across the whole plant.
Letting artillery plant dry out completely even once browns the fronds irreversibly — they do not green back up. Consistency beats volume.
Water quality notes
Use rainwater or filtered water for artillery plant where you can — ferns are sensitive to chlorine and tap-water minerals, which contribute to brown tips.
Seasonal and environmental adjusters
Every figure above shifts with the conditions in your home. For artillery plant, the levers that matter most are:
- Humidity and watering are linked — at 60%+ humidity the soil stays moist longer and you water less.
- A plastic or glazed pot holds moisture better than terracotta, which is an advantage for a thirsty fern.
- Bottom-watering or a pebble tray keeps moisture even and avoids wetting the crown.
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 artillery plant.
Artillery Plant watering — frequently asked questions
How often should I water artillery plant?
Water artillery plant when the top 1-2 cm (about half an inch) of soil is dry. Spring and summer: keep the soil evenly, lightly moist at all times — check every 2-3 days and water before the surface dries. Winter: still keep barely moist — a fern that dries out in a centrally heated room crisps up within a day or two.
How do I know when artillery plant needs water?
The very top of the compost feels dry to the touch (do not wait longer than this). Fronds start to look slightly limp or lose their fresh sheen. Frond tips begin to pale or curl before going crispy. The single most reliable test for artillery plant is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.
What does an overwatered artillery plant look like?
Yellowing, mushy crowns and a sour-smelling pot — even a moisture lover rots if waterlogged. Blackened frond bases at soil level. Fungus gnats thriving in permanently saturated compost. Letting artillery plant dry out completely even once browns the fronds irreversibly — they do not green back up. Consistency beats volume.
What are the signs of an underwatered artillery plant?
Crispy brown frond tips and edges — the classic dry-air / dry-soil fern signal. Wholesale frond drop after the rootball shrinks away from the pot sides. A faded, washed-out look across the whole plant.
Can I use tap water on artillery plant?
Use rainwater or filtered water for artillery plant where you can — ferns are sensitive to chlorine and tap-water minerals, which contribute to brown tips.
Keep reading
- Watering artillery plant in the UK — hard vs soft tap water
- Artillery Plant 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
- Underwatered plant — signs and how to rehydrate it
- Why is my plant wilting? Wet vs dry diagnosis
- Should I water my plant? The simple check before you pour
- How often to water snake plant
- How often to water dracaena
- How often to water peperomia
- All 609 watering schedules in the Growli library