Watering schedule

How often to water Nepeta 'Six Hills Giant' (Nepeta 'Six Hills Giant') — the schedule

Also called Six Hills Giant catmint, tall catmint.

More about nepeta 'six hills giant'

Watering at a glance

Base rhythm	When soil is dry to a few centimetres; infrequently once established
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 Nepeta 'Six Hills Giant'

Nepeta 'Six Hills Giant' · also called Six Hills Giant catmint, tall catmint · flowering

Nepeta 'Six Hills Giant' is a large, vigorous catmint forming billowing mounds of grey-green aromatic foliage smothered in long spikes of lavender-blue flowers from early summer. Exceptionally bee-friendly, drought-tolerant and easy, it is a classic for softening path edges and rose borders. A hard cut-back after the first flush triggers a strong second bloom into autumn.

Ideal humidity: Ambient outdoor humidity

The watering schedule, season by season

Nepeta 'Six Hills Giant' 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 nepeta 'six hills giant' is when soil is dry to a few centimetres; infrequently once established, 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.

Strongly drought-tolerant. Water new plants through their first season, then only in extended dry spells. It strongly dislikes wet, heavy soil, which rots the crown.

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 nepeta 'six hills giant' in seconds.

How to tell nepeta 'six hills giant' needs water

A calendar is the worst way to water nepeta 'six hills giant'. 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 nepeta 'six hills giant' for a day is almost always safer than over-watering it.

Overwatering vs underwatering nepeta 'six hills giant'

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

Water quality notes

Tap water is generally fine for nepeta 'six hills giant' 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 nepeta 'six hills giant', 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 nepeta 'six hills giant'.

Nepeta 'Six Hills Giant' watering — frequently asked questions

How often should I water nepeta 'six hills giant'?

Water nepeta 'six hills giant' when soil is dry to a few centimetres; infrequently once established. 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 nepeta 'six hills giant' 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 nepeta 'six hills giant' is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered nepeta 'six hills giant' 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 nepeta 'six hills giant' drop its buds and flowers. Consistency through the budding period is what protects the display.

What are the signs of an underwatered nepeta 'six hills giant'?

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 nepeta 'six hills giant'?