At a glance
- Light
- Medium / indirect light
- Typical interval
- Every 6 to 8 days (summer)
Every 11 to 17 days (winter) - Climate
- 18–24 °C
- Humidity
- 50–70 %
- Pet safety
- Toxic to cats and dogs
- Scientific name
- Asparagus setaceus
When and how much water
Water lace fern when the top 2 cm of soil feel dry to the touch. In summer that’s typically every 6 to 8 days. In winter, slow down to every 11 to 17 days. Use room-temperature water and let any excess drain. Never leave the pot sitting in standing water.
Adjust the timing for the light at the plant, the pot’s size and material, and the humidity indoors. Terracotta dries faster than glazed ceramic.
Light and placement
Lace fern thrives in bright, indirect light. Direct midday sun can scorch the leaves. Place it 1–2 meters back from an east or west window, or behind a sheer curtain on a south window.
Feeding
Feed lace fern every 30 days while it’s actively growing. Use a balanced liquid houseplant fertilizer at half the strength on the label, and only on soil that’s already damp. Feeding dry roots can scorch them.
When growth pauses, skip the fertilizer and let it rest.
Temperature & humidity
Lace fern is comfortable between 18 and 24 °C. Below 10 °C the leaves start taking damage, so keep it clear of cold drafts and unheated rooms.
It does best at 50–70% humidity. It doesn’t need misting.
Common problems
Yellowing, drooping, and dry edges often point to watering or drainage. Compare the signs before changing the routine.
Find what’s wrong
Toxic to pets?
Yes. Keep it out of reach.
Pet-safety information in the JungleBook uses ASPCA reference data where available. It is reference information, not veterinary advice.
Full Lace fern toxicity guide →
Pet-safe alternatives with similar light
Common questions
How often should I water a Lace fern?
Water your lace fern (Asparagus setaceus) when the top 2 cm of soil feel dry to the touch. In summer, that’s typically every 6 to 8 days. In winter, slow down to every 11 to 17 days.
How much light does a Lace fern need?
Lace fern thrives in bright, indirect light. Direct midday sun can scorch the leaves. Place it 1–2 meters back from an east or west window, or behind a sheer curtain on a south window.
Is Lace fern safe for cats and dogs?
The plant contains sapogenins. Chewing it can cause oral irritation, drooling, and vomiting. Keep lace fern out of reach of pets, or pick a non-toxic alternative like scarlet star bromeliad, Fuchsia, spider plant, or moth orchid.
Why are my Lace fern’s leaves turning yellow or drooping?
On a lace fern, yellowing and soft growth usually mean overwatering: watch for yellowing fronds, mushy crown, or root rot. Let the soil dry further between waterings and check drainage. If you see browning lacy foliage, dropping needles, or crispy frond tips instead, it’s likely thirsty. Water a little more often. With Botanicaly Pro, Botanicaly Bot can help assess visible signs from a photo and suggest possible causes.
Sources5 references
- Royal Botanic Gardens, Kew: Plants of the World OnlineAccepted name · synonyms · distribution and life form
- Royal Horticultural SocietyPlant profile · under-glass position · soil · moisture · propagation · pests · harmfulness · Foliage houseplants · liquid feed interval · seasonal feeding
- North Carolina State University Extension Gardener Plant ToolboxPlant description · cultural conditions · insects, diseases, and other plant problems
- Pet Poison HelplineScientific name · berries · gastrointestinal and skin-irritation signs
- ASPCA Animal Poison ControlASPCA record for Asparagus densiflorus cv sprengeri, a related asparagus-fern form rather than exact Asparagus setaceus
Last reviewed: 2026-09-21
