Growli

Plant care

Bird-in-a-bush (Fumewort) care

Corydalis solida

Also called Bird-in-a-bush, Fumewort, Spring Fumitory, Solid-tubered Corydalis.

RHS H7USDA 5-8Toxic to petsIndoor 10–20 cm tall and wide in flower

Watering rhythm

Medium indirect light (a couple of metres from a window)

Moderate in spring during active growth; dry during summer dormancy

Light

Medium indirect light (a couple of metres from a window)

Soil

Humus-rich, well-drained, neutral to slightly alkaline loam

Humidity

Moderate (45–65 % RH)

Temp

-25 to 20 °C

Pet safety

Toxic to pets

Mature size

10–20 cm tall and wide in flower

Care at a glance

Light

Picture the indirect light an east-facing window gives mid-morning — that's the brightness bird-in-a-bush grows fastest in. Thrives in dappled woodland shade or at the base of deciduous trees and shrubs; too much direct summer sun after the leaves emerge can scorch the delicate foliage. You'll know it's right when new leaves come out the same size and colour as the established ones. Smaller, paler new leaves = move closer to the window.

Watering

Aim for moderate in spring during active growth; dry during summer dormancy for bird-in-a-bush, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Keep soil evenly moist from emergence until foliage yellows; once fully dormant in summer the corm must remain dry to prevent rot — avoid planting in areas with summer irrigation.

Soil and pot

Bird-in-a-bush grows best in humus-rich, well-drained, neutral to slightly alkaline loam. Best in leafy, woodland-type soil with good structure that retains spring moisture but drains freely in summer; incorporate leaf mould when planting to mimic native habitat. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Bird-in-a-bush sits happiest at around Moderate (45–65 % RH) humidity and -25 to 20 °C (-13 to 68 °F). Suited to the cool, moderately humid conditions of British and Central European woodland in spring; no special humidity provision is required when grown outdoors. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed bird-in-a-bush sparingly. Apply a top-dressing of well-rotted leaf mould or a light dose of balanced fertiliser just as shoots emerge in late winter; no feeding is needed once in flower or during dormancy. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on bird-in-a-bush in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Corm rot in waterlogged soilSolid corms are particularly susceptible to fungal rot during summer dormancy if kept wet; ensure sharp drainage or lift and store corms dry in sand until autumn replanting.
  • Slugs and snails on emerging shootsThe tender young growth emerging in late winter is highly attractive to slugs; apply wildlife-safe iron phosphate pellets or use grit mulch around the crown at first emergence.

Propagation

Divide corm offsets in late summer before replanting in early autumn; collect ripe seed immediately after pods ripen in June and sow fresh (seed has an elaiosome that attracts ants for dispersal and viability drops quickly if dried). Self-seeds readily in suitable conditions. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Bird-in-a-bush is toxic to pets. Corydalis species contain isoquinoline alkaloids (including bulbocapnine and corydaline) that are toxic to cats and dogs. The ASPCA lists Corydalis species as toxic to dogs, cats, and horses. Ingestion can cause vomiting, sedation, tremors, and ataxia. All parts of the plant should be considered toxic. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Bird-in-a-bush care — frequently asked questions

What is the common name for Corydalis solida?

Corydalis solida is most commonly called Bird-in-a-bush, but it is also known as Bird-in-a-bush, Fumewort, Spring Fumitory, Solid-tubered Corydalis. The names refer to the same species, so care instructions for Bird-in-a-bush apply identically to anything sold as Fumewort.

How much light does bird-in-a-bush need?

Bird-in-a-bush grows best in medium indirect light (a couple of metres from a window). Thrives in dappled woodland shade or at the base of deciduous trees and shrubs; too much direct summer sun after the leaves emerge can scorch the delicate foliage.

How often should I water bird-in-a-bush?

Water bird-in-a-bush moderate in spring during active growth; dry during summer dormancy. Keep soil evenly moist from emergence until foliage yellows; once fully dormant in summer the corm must remain dry to prevent rot — avoid planting in areas with summer irrigation. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is bird-in-a-bush toxic to cats and dogs?

Bird-in-a-bush is toxic to pets. Corydalis species contain isoquinoline alkaloids (including bulbocapnine and corydaline) that are toxic to cats and dogs. The ASPCA lists Corydalis species as toxic to dogs, cats, and horses. Ingestion can cause vomiting, sedation, tremors, and ataxia. All parts of the plant should be considered toxic.

What USDA hardiness zone does bird-in-a-bush grow in?

Bird-in-a-bush is rated for USDA zone 5-8 and RHS hardiness H7. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Bird-in-a-bush deep-dive guides

Every aspect of bird-in-a-bush care, each with its own calibrated guide:

Featured in these plant shortlists

Bird-in-a-bush qualifies for 6 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Bird-in-a-bush is also known as Bird-in-a-bush, Fumewort, Spring Fumitory, and Solid-tubered Corydalis.