Plant care guides
Sweetheart plant care guide Hoya kerrii
How to grow and care for Sweetheart plant at home. Sold as single heart-shaped leaf.
- Light
- Bright / direct light
- Watering (summer)
- Every 14 to 21 days
- Watering (winter)
- Every 30 to 45 days, sometimes less
- Pet safety
- Pet-safe (non-toxic)
- Difficulty
- Easy
- Scientific name
- Hoya kerrii
- Origin
- SE Asia
- Humidity
- 40-70%
Fun fact
A single leaf cutting will live indefinitely but rarely produces a new shoot; the heart-shaped leaf you bought may stay one leaf for years.
When and how much water
Water Sweetheart plant when the soil has dried out completely. In summer that’s typically every 14 to 21 days; in winter slow down to every 30 to 45 days, sometimes less. Use room-temperature water and let any excess drain — never leave the pot sitting in standing water.
- Every 30 to 45 days, sometimes less
- Every 14 to 21 days
The real schedule depends on three things the calendar can’t see: the actual light at the plant, the pot’s size and material (terracotta dries faster than glazed ceramic), and your local humidity. Botanicaly’s app retunes the schedule from those signals on every reminder.
How bright a spot it needs
Sweetheart plant needs several hours of direct sun. Turn the pot every week so it grows evenly. The ideal lux range is 10,000 - 50,000 lux. In practical terms, place it directly in front of a south or southwest window, or 30 cm from an east window.
Feeding
Feed Sweetheart plant every 45 days while it’s actively growing. Use a cactus and succulent fertilizer, which is lower in nitrogen, at half the strength on the label, and only on soil that’s already damp. When growth pauses, skip the fertilizer and let it rest.
Temperature & humidity
Sweetheart plant is comfortable between 18 and 27 °C. Below 10 °C the leaves start taking damage, so keep it clear of cold drafts and unheated rooms.
It does best at 40–70% humidity. It doesn’t need misting.
Common problems
Most Sweetheart plant problems trace back to watering — here’s how to read the leaves.
Signs of overwatering
Watch for
- Yellowing leaves
- Mushy stems
- Black soft base
- Root rot
Let the soil dry further between waterings and make sure the pot drains freely — soggy roots are the usual cause.
Signs of underwatering
Watch for
- Wrinkled heart leaves
- Soft puckered leaves
- Limp foliage
Water a little more often and don’t let the soil go bone-dry for long.
Toxic to pets?
NoPet-safe.
Sweetheart plant is non-toxic to cats and dogs. Safe to keep in a home with pets.
Browse all pet-safe houseplants →
Pet-safety information for catalog plants uses ASPCA reference data where available. It is reference information, not veterinary advice.
Propagation
Grow more Sweetheart plant from a cutting.
- Choose a healthy stem with at least one node and one or two leaves.
- Cut just below a node using clean, sharp scissors or a knife.
- Remove any leaves from the bottom 5 cm so they don’t rot in water or soil.
Common questions
How often should I water a Sweetheart plant?
Water your Sweetheart plant (Hoya kerrii) when the soil has dried out completely. In summer, that’s typically every 14 to 21 days; in winter, slow down to every 30 to 45 days, sometimes less. Botanicaly’s app tunes this further based on your home’s actual light, pot size, and local weather.
How much light does a Sweetheart plant need?
Sweetheart plant needs several hours of direct sun. Turn the pot every week so it grows evenly. The ideal lux range is 10,000 - 50,000 lux. In practical terms, place it directly in front of a south or southwest window, or 30 cm from an east window.
Is Sweetheart plant safe for cats and dogs?
Sweetheart plant is non-toxic to cats and dogs. Safe to keep in a home with pets.
Why are my Sweetheart plant’s leaves turning yellow or drooping?
On a Sweetheart plant, yellowing and soft growth usually mean overwatering — watch for yellowing leaves, mushy stems, or black soft base. Let the soil dry further between waterings and check drainage. If you see wrinkled heart leaves, soft puckered leaves, or limp foliage instead, it’s likely thirsty — water a little more often. Botanicaly’s Plant Doctor can help assess visible signs from a photo and suggest possible causes.
Botanicaly
A schedule that reads your room.
You don’t need to work out your Sweetheart plant’s care from scratch each time. Botanicaly uses its saved setup and care history for the next step. Identifying is free. Pro adds Plant Doctor and Weather-smart care.
Still wet
Check again in 2 days
Botanicaly updates the next step when the soil isn’t dry.
