How to Water Lavender
Lavandula spp.
Reviewed by Kiersten Rankel M.S.
Quick Answer
Water your Lavender every 10–14 days from May through September, when the top 2 inches of soil are bone-dry. Established outdoor plants need only occasional water during long dry stretches.
Soak deeply, then let it dry hard. Lavender dies from soggy roots far more often than from a missed watering.
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How Often and How Much to Water
Adjust the sliders below for your pot size, light, and setting. The numbers assume a gritty fast-draining mix and a pot or site with drainage.
Setting
Every
9days
Use
1cup
Your Watering Rhythm Across the Year
Soil dries faster in the growing season, which varies by region. Slow down watering in the off-season to avoid overwatering.
Pacific
Mountain
Midwest
Northeast
Southeast
JFMAMJJASOND
Growing season
Growing season
9days
Resting season
3–4weeks
How to Water Your Lavender
Soak deeply, then let it dry hard. Lavender evolved on rocky Mediterranean hillsides and resents constantly damp soil far more than the occasional dry spell.
1
Pour at the soil line around the base. Keep water off the woody crown and the silvery foliage when you can.
2
Soak slowly until water runs out the bottom of the pot or pools briefly on garden soil. Stop there.
3
Water in the morning so the foliage and crown dry by night. Wet leaves overnight invite root rot and powdery mildew.
4
Empty the saucer after 10 minutes. Lavender roots will rot if they sit in standing water.
Should You Water Your Lavender Today?
Always check before you pour. Lavender tolerates long dry stretches but a few extra waterings on already-damp soil is what kills it.
Hold off
Soil 2 inches down still feels damp
Foliage looks firm and silvery
New growth tips look fresh and pale
Pot feels heavy when you lift it
Soil sits tight against the pot wall
Ready for water
Top 2 inches of soil are bone-dry
Foliage looks dull or slightly limp
Tips of new growth wilting
Visible gap between soil and pot wall
Pot feels almost empty
If Something Looks Off
Underwater and overwater both leave Lavender looking sad and gray. The difference is in the soil and the speed of decline.
Underwatered
Soil
Bone-dry through the pot and pulled away from the sides
Leaves
Tips of new growth wilt first while older leaves stay firm
Pace
Slow decline that perks up within a day of a deep soak
Next steps
Set the pot in a basin of room-temperature water for 20 to 30 minutes
Drain fully and return to its usual sunny spot
Expect new growth tips to firm back up within 24 hours
Existing crispy leaves won't reverse but the plant still photosynthesizes from green parts. Wait for new growth before fertilizing
Overwatered
Soil
Stays dark and damp for days with a sour smell
Stem
Browning and softening at the soil line and woody crown
Leaves
Whole plant turns gray-green then yellow from the inside out
Pace
Sudden collapse that worsens even after you stop watering
Next steps
Stop watering immediately and move to the brightest airiest spot you have
Pop out of the pot and trim any dark mushy roots back to firm white tissue
Repot in fresh gritty fast-draining mix in a clean terracotta pot
Wait until the top 3 inches of soil are bone-dry before the first watering
Remove any stems that have already blackened at the base
Got More Questions?
Why does my Lavender die in winter even when I barely water it?
Container Lavender dies in winter from the combination of cold wet roots and waterlogged soil rather than the cold itself. Drainage is the variable that decides life or death.
Tilt the pot slightly to encourage runoff, move under an eave so it doesn't catch every rain, and only water when the top 3 inches go bone-dry. In zones colder than 6, French and Spanish Lavender are not winter hardy outdoors and need to overwinter in a bright cool room indoors.
Should I water Lavender during a heatwave?
Established Lavender usually doesn't need extra water in heat as long as it isn't in a tiny container. The plant evolved for hot dry conditions.
Check the soil 2 inches down. If bone-dry, deep-soak. If still damp, leave it alone. Lavender in containers smaller than 8 inches may need water every 5 to 7 days during a long heatwave.
Is tap water OK for Lavender?
Yes. Lavender is not sensitive to chlorine or fluoride at typical municipal levels, and the small amount of mineral content in tap water mimics the limestone-rich soils it grows in naturally.
How long can my Lavender go without water if I'm on vacation?
An established Lavender in a 6 inch pot or larger handles 3 to 4 weeks easily, especially if you give it a deep soak and move it out of direct afternoon sun before you leave.
In-ground Lavender is even more forgiving and rarely needs vacation help once established.
Should I mist my Lavender?
No. Lavender is from a dry climate and damp foliage invites powdery mildew. If your indoor air is bone-dry, give the plant good airflow rather than misting. Mist solves nothing and creates a fungus problem.
Why is my Lavender's soil staying wet for days?
Either the pot is too big, the mix holds too much water, or the plant has stopped drinking because of low light or root damage.
Downsize to a snug terracotta pot, switch to a gritty cactus or Mediterranean herb mix with extra perlite, and check the roots for any soft brown sections. A small healthy Lavender in the right mix should dry out within a week even in cool weather.
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About This Article
Kiersten Rankel M.S.
Botanical Data Lead at Greg · Plant Scientist
Editorial Process
Watering guidance verified against Lavandula spp. growth data from Greg's botanical database, cross-referenced with USDA hardiness zone data and published horticultural research.
0+ Greg users growing this plant
USDA hardiness zones 5a–11b