Watering schedule

How often to water Dragon's tongue (Hemigraphis repanda) — the schedule

Also called Dragon's tongue, Dragon's tongue plant, Red ivy (genus name).

More about dragon's tongue

Watering at a glance

Base rhythm	When the top 2-3 cm is just dry, roughly every 5-9 days
Spring / summer	Spring and summer: water when the top of the soil is dry to roughly a knuckle deep — typically every 5-9 days.
Autumn	Autumn: growth slows, so stretch the interval and let it dry a little more between waterings.
Winter	Winter: water noticeably less — often half as often — because low light and dormancy slow water use right down.
Light	Bright indirect light (just back from a sunny window)

About Dragon's tongue

Hemigraphis repanda · also called Dragon's tongue, Dragon's tongue plant · tropical

Dragon's tongue (Hemigraphis repanda) is a low, creeping tropical from the Acanthaceae family, prized for narrow, toothed leaves that flush silvery-green to deep wine-purple. Its defining need is steady warmth and humidity: it sulks below 50% humidity, crisping at the edges, so consistent moisture in the air and soil matters more than anything else.

Ideal humidity: 50-85%

Watch for — Crispy brown leaf edges: The classic sign of air that is too dry; the thin leaves desiccate at the margins below roughly 50% humidity. Raise humidity with a tray of damp pebbles, a humidifier, or a terrarium.

The watering schedule, season by season

Dragon's tongue likes a soak-then-partly-dry rhythm — let the top of the soil dry before watering again, and never leave it standing in water. The base rhythm for dragon's tongue is when the top 2-3 cm is just dry, roughly every 5-9 days, 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: water when the top of the soil is dry to roughly a knuckle deep — typically every 5-9 days.
Autumn (slowing down): Autumn: growth slows, so stretch the interval and let it dry a little more between waterings.
Winter (rest / dormancy): Winter: water noticeably less — often half as often — because low light and dormancy slow water use right down.

Keep the soil evenly moist but never waterlogged, watering once the top 2-3 cm feels dry. This thin-leaved tropical wilts quickly when too dry yet rots fast in soggy compost, so aim for steady, light moisture rather than swings between bone-dry and saturated. Ease off in winter when growth slows.

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 dragon's tongue in seconds.

How to tell dragon's tongue needs water

A calendar is the worst way to water dragon's tongue. Check the plant and the soil instead — for this species, look for these signals in order:

The top 2-3 cm of soil is dry to the touch (or a knuckle-deep finger test comes back dry).
Lifting the pot, it feels distinctly light.
Leaves droop slightly or lose a little of their gloss just before they truly need water.

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 dragon's tongue for a day is almost always safer than over-watering it.

Overwatering vs underwatering dragon's tongue

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For dragon's tongue specifically:

Signs you are overwatering

Yellowing lower leaves and a pot that stays wet and heavy for days.
Soft, brown, mushy stems or a sour soil smell — root rot.
Fungus gnats breeding in permanently damp soil.

Signs you are underwatering

Drooping, curling leaves with crispy brown edges that perk up after watering.
The rootball shrinks away from the pot and water runs straight down the sides.
Slow growth and a generally tired, washed-out look.

Watering dragon's tongue on a fixed weekly calendar regardless of season is the most common mistake — in dim winter light the same routine drowns it. Check the soil, not the date.

Water quality notes

Tap water is generally fine for dragon's tongue. If your water is very hard and you see brown leaf tips, switch to filtered or rainwater.

Seasonal and environmental adjusters

Every figure above shifts with the conditions in your home. For dragon's tongue, the levers that matter most are:

More light and warmth speed drying; the brighter the spot, the shorter the real interval.
Pot size and material matter — small terracotta pots dry far faster than large glazed or plastic ones.
Lifting the pot to feel its weight is more reliable than any calendar for judging when to water.

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 dragon's tongue.

Dragon's tongue watering — frequently asked questions

How often should I water dragon's tongue?

Water dragon's tongue when the top 2-3 cm is just dry, roughly every 5-9 days. Spring and summer: water when the top of the soil is dry to roughly a knuckle deep — typically every 5-9 days. Winter: water noticeably less — often half as often — because low light and dormancy slow water use right down.

How do I know when dragon's tongue needs water?

The top 2-3 cm of soil is dry to the touch (or a knuckle-deep finger test comes back dry). Lifting the pot, it feels distinctly light. Leaves droop slightly or lose a little of their gloss just before they truly need water. The single most reliable test for dragon's tongue is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered dragon's tongue look like?

Yellowing lower leaves and a pot that stays wet and heavy for days. Soft, brown, mushy stems or a sour soil smell — root rot. Fungus gnats breeding in permanently damp soil. Watering dragon's tongue on a fixed weekly calendar regardless of season is the most common mistake — in dim winter light the same routine drowns it. Check the soil, not the date.

What are the signs of an underwatered dragon's tongue?

Drooping, curling leaves with crispy brown edges that perk up after watering. The rootball shrinks away from the pot and water runs straight down the sides. Slow growth and a generally tired, washed-out look.

Can I use tap water on dragon's tongue?