Watering schedule

How often to water Hairy Rock Jasmine (Androsace villosa) — the schedule

Also called Hairy Rock Jasmine, Villous Androsace.

More about hairy rock jasmine

Watering at a glance

Base rhythm	Sparingly; dry conditions preferred especially in winter
Spring / summer	Spring and summer (active growth and bloom): keep evenly moist, watering when the top 2-3 cm is dry — typically when the soil tells you it is time.
Autumn	Autumn: ease back as flowering finishes and growth slows; let it dry a little more between waterings.
Winter	Winter / rest: water sparingly while it rests, then resume as new growth and buds appear.
Light	Direct sun (at least 4-6 hours)

About Hairy Rock Jasmine

Androsace villosa · also called Hairy Rock Jasmine, Villous Androsace · flowering

Hairy Rock Jasmine is a cushion-forming alpine perennial widespread across mountain ranges from the Alps and Pyrenees to central Asia. Dense silvery-hairy rosettes build compact mounds that in spring are covered with white or pale pink flowers bearing a yellow or pink eye. A reliable and somewhat more adaptable rock garden alpine than some relatives, valued for its attractive silver foliage and drought resilience.

Ideal humidity: Low, 20–40% RH

Watch for — Aphids on spring growth: Greenfly can colonise new spring shoots and flower stems. Treat with insecticidal soap or a light jet of water; monitor closely as infestations on small cushion plants can stress the whole plant quickly.

The watering schedule, season by season

Hairy Rock Jasmine flowers best on steady, even moisture — let it dry out hard and it drops buds; keep it soggy and the roots rot before it can bloom. The base rhythm for hairy rock jasmine is sparingly; dry conditions preferred especially in winter, 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 (active growth and bloom): keep evenly moist, watering when the top 2-3 cm is dry — typically when the soil tells you it is time.
Autumn (slowing down): Autumn: ease back as flowering finishes and growth slows; let it dry a little more between waterings.
Winter (rest / dormancy): Winter / rest: water sparingly while it rests, then resume as new growth and buds appear.

Very drought-tolerant. Water lightly during spring growth and flowering. Reduce watering significantly in summer after flowering, and keep nearly dry in winter. Overhead moisture collecting in the hairy rosettes in winter is a primary cause of rot; base watering or rain protection is preferable.

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 hairy rock jasmine in seconds.

How to tell hairy rock jasmine needs water

A calendar is the worst way to water hairy rock jasmine. 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.
Leaves or flower stems lose turgor and start to droop.
Buds stall or the pot feels light.

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 hairy rock jasmine for a day is almost always safer than over-watering it.

Overwatering vs underwatering hairy rock jasmine

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For hairy rock jasmine specifically:

Signs you are overwatering

Yellowing leaves, bud drop, and a heavy, constantly wet pot.
Mushy stems or crown rot at soil level.
Fungus gnats and a sour soil smell.

Signs you are underwatering

Wilting, bud and flower drop, and crispy leaf edges.
A faded, stressed look and a rootball that has pulled from the pot sides.

Erratic watering — bone dry then flooded — makes hairy rock jasmine drop its buds and flowers. Consistency through the budding period is what protects the display.

Water quality notes

Tap water is generally fine for hairy rock jasmine unless your water is very hard; rainwater is a safe default if leaf tips brown.

Seasonal and environmental adjusters

Every figure above shifts with the conditions in your home. For hairy rock jasmine, the levers that matter most are:

A blooming plant in good light drinks faster than a resting one — shorten the interval during flowering.
Brighter, warmer spots dry the pot faster; check before watering rather than fixing a date.
Empty the saucer after every water so the roots are never sitting in run-off.

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 hairy rock jasmine.

Hairy Rock Jasmine watering — frequently asked questions

How often should I water hairy rock jasmine?

Water hairy rock jasmine sparingly; dry conditions preferred especially in winter. Spring and summer (active growth and bloom): keep evenly moist, watering when the top 2-3 cm is dry — typically when the soil tells you it is time. Winter / rest: water sparingly while it rests, then resume as new growth and buds appear.

How do I know when hairy rock jasmine needs water?

The top 2-3 cm of soil is dry to the touch. Leaves or flower stems lose turgor and start to droop. Buds stall or the pot feels light. The single most reliable test for hairy rock jasmine is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered hairy rock jasmine look like?

Yellowing leaves, bud drop, and a heavy, constantly wet pot. Mushy stems or crown rot at soil level. Fungus gnats and a sour soil smell. Erratic watering — bone dry then flooded — makes hairy rock jasmine drop its buds and flowers. Consistency through the budding period is what protects the display.

What are the signs of an underwatered hairy rock jasmine?

Wilting, bud and flower drop, and crispy leaf edges. A faded, stressed look and a rootball that has pulled from the pot sides.

Can I use tap water on hairy rock jasmine?