How to Water Alocasia Polly
Alocasia × mortfontanensis
Reviewed by Kiersten Rankel M.S.
Quick Answer
Water your Alocasia Polly every 5 to 8 days when the top inch of soil is dry. Stretch to 10 to 14 days in winter when growth slows and many plants go dormant.
Soak deeply, drain fully, and pair with bright indirect light and humidity above 50%.
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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 chunky aroid mix and a pot 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 Alocasia Polly Plant
Soak the rootball deeply, drain fully, and never let it sit in standing water. Alocasias rot at the underground stems fast and they tell you with sudden leaf yellow when the cadence is off.
1
Pour room-temperature water at the soil line. Cold winter tap water shocks the roots on this tropical species.
2
Water slowly until it streams out the drainage holes so the rootball is fully soaked.
3
Empty the saucer after 10 minutes. Standing water rots the underground stems and triggers leaf drop.
4
Use filtered, distilled, or rainwater if your tap is heavily treated. Alocasias brown at the leaf edges with chlorine and fluoride buildup.
Should You Water Your Alocasia Polly Plant Today?
Always check before you water. Alocasia Polly leaves yellow and drop fast on either side of the cadence and the underground stems are easy to lose to rot.
Hold off
Leaves feel firm and stand on their stems
New leaf spear unfurling in the center
Top inch of soil still feels damp
Soil sits tight against the pot wall
Pot feels heavy when lifted
Ready for water
Leaves drooping at their stems
Edges of leaves curling under
Top inch of soil dry to the touch
Visible gap between soil and pot wall
Pot feels light when lifted
If Something Looks Off
Underwater and overwater both end in yellow leaves dropping off the plant. The pattern of drop and the underground stems tell you which one is happening.
Underwatered
Soil
Dry through the pot and pulled away from the wall
Leaves
Edges crisping and older leaves yellowing from the tip
Pace
Slow decline that bounces back within a day of a deep soak
Next steps
Set the pot in a basin of room-temperature water for 30 minutes
Drain fully and move out of direct sun for a day while it recovers
Expect leaves to firm up within 12 to 24 hours
Existing crispy edges will not heal. Wait for a new leaf to unfurl before fertilizing
Overwatered
Soil
Stays dark and damp for over a week with a sour smell
Stem
Soft yellow patches on the leaf stems near the soil line
Leaves
Mass yellowing of older leaves with new growth stalled
Pace
Sudden collapse that worsens even after you stop watering
Next steps
Stop watering and move to a bright airy spot
Slide the plant out of the pot and check the underground stems. Trim mushy roots and any rotted underground stem back to firm white tissue
Repot in fresh chunky aroid mix in a clean pot one size down if you removed a lot of root
Wait until the top 2 inches of soil are dry before the first watering
If most leaves are gone but the underground stem is firm, the plant will push new growth from there. Keep it warm and bright while it rebuilds
Got More Questions?
Why are the leaves on my Alocasia Polly yellowing one by one?
Some leaf turnover is normal for Alocasias and they drop an old leaf for every new one that comes in. If your plant has 4 healthy leaves, that is a typical mature size.
If multiple leaves are yellowing at once, that points to overwatering or a temperature shift. Check the soil and the underground stems before assuming the worst.
Why has my Alocasia Polly stopped growing?
Alocasias often go dormant in winter and stop pushing new leaves. The plant may even drop most of its leaves and look like it is dying. As long as the underground stem is firm, new growth comes back in spring.
Ease way back on watering during dormancy. Keep it warm and bright and resume the regular cadence when you see a new spear.
Can I use tap water on my Alocasia Polly?
In most homes, yes, but Alocasias are mildly sensitive to chlorine and fluoride and slowly brown at the edges with heavily treated water.
If your edges keep crisping despite good watering, switch to filtered, distilled, or rainwater. Letting tap water sit overnight helps with chlorine but does nothing for fluoride.
Do little flies in the soil mean I am overwatering?
Yes. Fungus gnats need consistently damp topsoil to breed and Alocasias prefer the top inch to dry between waterings.
Let the top inch dry between waterings, top with a thin layer of horticultural sand, and the gnats die out within two weeks. Easing the cadence often fixes the underlying overwatering at the same time.
How long can my Alocasia Polly go without water?
About 7 to 10 days for a mature plant in a 6 inch pot during the growing season, less in a smaller pot or in heat. Alocasias are not drought tolerant and the leaves wilt fast.
For a longer trip, deep-water before you leave and pull the plant back from the brightest window. Group with other plants for a small humidity boost.
Should I mist my Alocasia Polly for humidity?
Misting is not a useful way to raise humidity. The water evaporates in minutes and ambient humidity barely changes. Worse, water sitting on Alocasia leaves invites fungal spots.
A humidifier nearby is the only reliable fix. Group with other plants for a small assist, but do not rely on misting or pebble trays to keep this plant happy.
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About This Article
Kiersten Rankel M.S.
Botanical Data Lead at Greg · Plant Scientist
Editorial Process
Watering guidance verified against Alocasia × mortfontanensis growth data from Greg's botanical database, cross-referenced with USDA hardiness zone data and published horticultural research.