Parsley
Petroselinum crispum
A biennial Mediterranean herb in the carrot family (Apiaceae) grown as an annual for its leaves. The garden 'parsley worm' - caterpillar of the black swallowtail butterfly (Papilio polyxenes) - feeds exclusively on Apiaceae foliage; planting parsley is among the simplest ways to host a multi-year swallowtail population. Flat-leaf (Italian) selections have stronger flavor than curly selections.
Edible
Pollinator
Light
Full sun / Part sun
Water
Consistent moisture
Mature size
10-18" tall · 8" apart
Hardy in zones
Biennial in zones 4a-9b (grown as annual elsewhere)
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
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A documented larval host for the Black swallowtail - specialist wildlife that depend on plants like this to reproduce.
Cold hardiness
This plant is grown as an annual; hardiness zones don't apply.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
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Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Appears in collections
Educator packet
Plant packet
Parsley educator packet
A biennial Mediterranean herb in the carrot family (Apiaceae) grown as an annual for its leaves. The garden 'parsley worm' - caterpillar of the black swallowtail butterfly (Papilio polyxenes) - feeds exclusively on Apiaceae foliage; planting parsley is among the simplest ways to host a multi-year swallowtail population. Flat-leaf (Italian) selections have stronger flavor than curly selections.
Scientific name
Petroselinum crispum
Plant type
herb
Hardiness
Biennial in zones 4a-9b (grown as annual elsewhere)
Light
full-sun, part-sun
Moisture
consistent
Spacing
8 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Parsley (Petroselinum crispum). Retrieved 2026, August 20, from https://plotwright.com/plants/petroselinum-crispum
Sources used for this record
This record is compiled from the sources below.













