Watering schedule

How often to water Lysimachia nummularia (Lysimachia nummularia) — the schedule

Also called Creeping Jenny, Moneywort, Herb Twopence.

More about lysimachia nummularia

Watering at a glance

Base rhythm	Keep consistently moist; water whenever the surface begins to dry
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	Medium indirect light (a couple of metres from a window)

About Lysimachia nummularia

Lysimachia nummularia · also called Creeping Jenny, Moneywort · flowering

Creeping Jenny is a fast, ground-hugging perennial with round, coin-like leaves on prostrate stems that root as they run. Through summer it studs the carpet with cup-shaped, bright yellow flowers. Equally happy at pond margins, in damp borders, or trailing from containers, it is vigorous to the point of invasiveness in moist, fertile ground.

Ideal humidity: 50-90%

Watch for — Invasive spread: Roots wherever stems touch moist soil and can swamp smaller neighbours or escape into lawns and waterways. It is listed as invasive in parts of North America; site it where it can be contained or grow it in pots.

The watering schedule, season by season

Lysimachia nummularia 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 lysimachia nummularia is keep consistently moist; water whenever the surface begins to 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 (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.

Loves damp to wet soil and tolerates a pond margin in shallow water. In borders or pots, never let it dry out fully, or leaves crisp at the edges. It will not thrive in droughty ground.

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 lysimachia nummularia in seconds.

How to tell lysimachia nummularia needs water

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

Overwatering vs underwatering lysimachia nummularia

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

Water quality notes

Tap water is generally fine for lysimachia nummularia 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 lysimachia nummularia, 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 lysimachia nummularia.

Lysimachia nummularia watering — frequently asked questions

How often should I water lysimachia nummularia?

Water lysimachia nummularia keep consistently moist; water whenever the surface begins to dry. 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 lysimachia nummularia 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 lysimachia nummularia is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

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

What are the signs of an underwatered lysimachia nummularia?

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 lysimachia nummularia?