Asparagus fern care guide
Asparagus setaceus
Also known as: Lace fern, Asparagus plumosus, Plumosa fern
Pets and children
Considered toxic
Sapogenins in the berries can cause vomiting, abdominal pain, and diarrhea, and repeated contact with the foliage can irritate skin; keep it out of reach and consult a veterinarian (or a doctor, for a child) if eaten.
How often to water Asparagus fern
- Spring–Summer (Mar–Sep)
- Every 4 days
- Water thoroughly once the topsoil is dry, as a guide; if it dries out, the fine needles yellow and drop.
- Autumn (Oct–Nov)
- Every 6 days
- Once it cools, wait about a day or two after the topsoil dries before watering.
- Winter (Dec–Feb)
- Every 10 days
- Water sparingly roughly three to four days after the soil dries, and mist often in a heated room.
Light and placement for Asparagus fern
Generally best in bright shade out of direct sun: it thrives in light through a sheer curtain, strong sun yellows the delicate foliage, and too dark a spot makes it shed.
Overwintering Asparagus fern
Overwintering guide: 3°C (37°F) or above
It tolerates around 3°C but frost kills the foliage; as a guide, move it to a bright spot indoors away from dry heater drafts, mist for humidity, and do not let the soil dry out completely even in winter.
Fertilizing and repotting Asparagus fern
Fertilizer
From April to October, a diluted liquid feed about every two weeks or slow-release fertilizer roughly every two months; yellowing is usually about water and humidity rather than food, and none is given in winter.
When to repot
Spring–Summer (Mar–Sep)
Common problems with Asparagus fern
- Dry soil or dry air turns the fine needles yellow and they shower down.
- Direct sun bleaches and scorches the foliage.
- Roots fill the pot until water cannot get in, and the whole plant weakens.
Tips for growing Asparagus fern
- It climbs by nature, so give it a support or trim the long stems.
- The stems carry tiny thorns, so take care when handling it.
- The thick roots can crack a pot, so repot every year or two.
These are AI-generated general guidelines. They vary with the variety, the placement and the pot size. For effects on pets or children, consult a veterinarian or a doctor.
Keep your plant log going
Greenery is a free app that keeps your plant care going, with watering reminders and photo records. Available on iOS and Android.
