Watering schedule

How often to water Silverbush (Convolvulus cneorum) — the schedule

Also called Silverbush, Bush morning glory, Shrubby bindweed.

More about silverbush

Watering at a glance

Base rhythm	Moderate in the growing season, minimal 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 Silverbush

Convolvulus cneorum · also called Silverbush, Bush morning glory · flowering

Convolvulus cneorum is a compact, evergreen Mediterranean shrub native to rocky limestone hillsides of the western Mediterranean basin, prized for its intensely silvery, silky foliage and a long succession of white funnel-shaped flowers flushed pink in bud. It must have full sun and sharp drainage — poor drainage, especially combined with winter wet, is the most common cause of death. Keep it in low-fertility soil to maintain compactness and vigour. It is not considered toxic to pets or humans.

Ideal humidity: Low

Watch for — Root rot / winter wet: The leading cause of plant loss; ensure beds drain freely and consider raising plants on mounds or in containers in high-rainfall gardens.

The watering schedule, season by season

Silverbush 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 silverbush is moderate in the growing season, minimal 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.

Water freely during spring and summer but drastically reduce watering from autumn onwards; plants in containers should be kept nearly dry through winter to prevent root rot.

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 silverbush in seconds.

How to tell silverbush needs water

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

Overwatering vs underwatering silverbush

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For silverbush 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 silverbush drop its buds and flowers. Consistency through the budding period is what protects the display.

Water quality notes

Tap water is generally fine for silverbush 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 silverbush, 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 silverbush.

Silverbush watering — frequently asked questions

How often should I water silverbush?

Water silverbush moderate in the growing season, minimal 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 silverbush 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 silverbush is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered silverbush 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 silverbush drop its buds and flowers. Consistency through the budding period is what protects the display.

What are the signs of an underwatered silverbush?

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 silverbush?