Watering schedule

How often to water Cylindrical Rock Jasmine (Androsace cylindrica) — the schedule

Also called Cylindrical Rock Jasmine, Cylindrical Androsace.

More about cylindrical rock jasmine

Watering at a glance

Base rhythm	Very sparingly; almost none 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 Cylindrical Rock Jasmine

Androsace cylindrica · also called Cylindrical Rock Jasmine, Cylindrical Androsace · flowering

Cylindrical Rock Jasmine is a rare, specialist alpine perennial endemic to the Pyrenees, forming extraordinarily tight, elongated cylindrical rosettes that build into dense domed cushions. White flowers with a yellow eye appear in spring. One of the most challenging Androsace species in cultivation, it is grown almost exclusively by specialist alpine enthusiasts in an alpine house or tufa garden.

Ideal humidity: Very low, 15–30% RH

Watch for — Irreversible cushion rot: Any moisture reaching the rosette centres, particularly in cool or humid conditions, rapidly triggers lethal fungal rot. Prevention through alpine house cultivation, near-dry winter management, and vertical tufa planting is the only reliable approach; affected sections cannot be saved.

The watering schedule, season by season

Cylindrical 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 cylindrical rock jasmine is very sparingly; almost none 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.

Extremely sensitive to overwatering at all times of year. Moisten the root zone very lightly during the brief spring growing season only. From late summer to early spring keep the plant essentially dry. Never water from above — moisture in the tight cylindrical rosettes causes immediate rot. Bottom watering or capillary mat systems suit this species best.

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 cylindrical rock jasmine in seconds.

How to tell cylindrical rock jasmine needs water

A calendar is the worst way to water cylindrical 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 cylindrical rock jasmine for a day is almost always safer than over-watering it.

Overwatering vs underwatering cylindrical rock jasmine

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

Cylindrical Rock Jasmine watering — frequently asked questions

How often should I water cylindrical rock jasmine?

Water cylindrical rock jasmine very sparingly; almost none 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 cylindrical 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 cylindrical 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 cylindrical 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 cylindrical rock jasmine drop its buds and flowers. Consistency through the budding period is what protects the display.

What are the signs of an underwatered cylindrical 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 cylindrical rock jasmine?