Troubleshooting
Hoya lacunosa problems — and how to fix them
Hoya lacunosa (Hoya lacunosa) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Overwatering and root rot
Yellowing, soft or wilting leaves and a soggy mix signal too much water. Let the medium dry out between waterings and ensure the pot drains freely; this semi-succulent is far more forgiving of drought than of wet feet.
No flowers / leggy growth
Insufficient light is the usual cause. Move to a brighter indirect spot, and never cut off the bare flower spurs (peduncles) — the plant reblooms from the same spur each season, so removing them sacrifices future flowers.
Mealybugs and other sap-suckers
Mealybugs (white cottony clusters), aphids and scale are the most common pests, drawn to the plant and its nectar. Wipe leaves regularly, inspect leaf joints, and treat infestations with insecticidal soap or diluted neem oil.
Leaf scorch
Harsh direct midday or afternoon sun bleaches or burns the thin foliage. Provide bright indirect light or only gentle morning sun, and move plants back from hot, unfiltered windows.
Cold damage
Exposure below about 10 C (50 F) causes leaf yellowing and dropped flower buds. Keep away from cold draughts and unheated rooms, and bring outdoor plants in well before nights turn cold.
Shrivelled or wrinkled leaves
Under-watering or very low humidity can make the succulent leaves look wrinkled. Check the mix and water thoroughly if dry; raise humidity if the air is very dry indoors.
Prevent hoya lacunosa problems before they start
Most hoya lacunosa issues are care-mismatch, not bad luck. Dial in the basics:
Hoya lacunosa problems — FAQ
Why is my hoya lacunosa overwatering and root rot?
Yellowing, soft or wilting leaves and a soggy mix signal too much water. Let the medium dry out between waterings and ensure the pot drains freely; this semi-succulent is far more forgiving of drought than of wet feet.
Why is my hoya lacunosa no flowers / leggy growth?
Insufficient light is the usual cause. Move to a brighter indirect spot, and never cut off the bare flower spurs (peduncles) — the plant reblooms from the same spur each season, so removing them sacrifices future flowers.
Why is my hoya lacunosa mealybugs and other sap-suckers?
Mealybugs (white cottony clusters), aphids and scale are the most common pests, drawn to the plant and its nectar. Wipe leaves regularly, inspect leaf joints, and treat infestations with insecticidal soap or diluted neem oil.
Why is my hoya lacunosa leaf scorch?
Harsh direct midday or afternoon sun bleaches or burns the thin foliage. Provide bright indirect light or only gentle morning sun, and move plants back from hot, unfiltered windows.
Why is my hoya lacunosa cold damage?
Exposure below about 10 C (50 F) causes leaf yellowing and dropped flower buds. Keep away from cold draughts and unheated rooms, and bring outdoor plants in well before nights turn cold.
Why is my hoya lacunosa shrivelled or wrinkled leaves?
Under-watering or very low humidity can make the succulent leaves look wrinkled. Check the mix and water thoroughly if dry; raise humidity if the air is very dry indoors.