When to sow celery?
- Botanical name
- Apium graveolens
- Family
- Apiaceae
Celery is sown indoors from March to April, with the seed going on the surface and staying uncovered. It germinates in 20 to 30 days. It is harvested from July to October.
Celery is a biennial plant. The edible parts are the roots, stems, leaves and seeds.
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Celery through the year
- indoor sowing
- transplanting
- harvest
In short
The last frost is not on the same day everywhere, so the recorded weeks are a guide and not a date.
Growing conditions
Companions in the bed
Companion planting is tradition and not an agronomic claim. What is recorded is which pairs sources recommend and which they advise against.
Next to cucumbers the neighbours go to the edge of the bed.
Kohlrabi is a quick catch crop.
- “Cited” means the pair is named by one source or two.
Pests and diseases
Listed here is every problem for which the sources name this plant as a host. The problems are not listed in order of how common they are.
Carrot fly
pest- Signs
- Just under the skin of the root there are rusty pits and tunnels, with small yellowish larvae in them. The top can turn yellow. An attacked root is no use in store and rots quickly.
- Prevention
- Sow thinly, so that you do not have to thin out, because the smell at thinning is what draws the females in. Sow later and harvest earlier to dodge the first and the second generation. Keep to a rotation, because the fly hatches from the soil.
- What to do
- Cover the whole bed with fine insect mesh from sowing on. Covering the whole bed is more reliable than a vertical barrier along it.
European corn borer
pest- Signs
- Small entry holes in the stem with borings that look like sawdust. Above them the foliage wilts or the stem snaps.
- Prevention
- In autumn remove or shred the stems in which the caterpillars overwinter: cut them off at ground level and mulch them, plough them in or carry them off the bed. This is the strongest measure, because it takes the pest's winter quarters away.
- What to do
- Split the attacked stem below the entry hole and destroy the caterpillar. On a small bed this is workable and more precise than spraying, which does not reach a caterpillar inside a stem anyway.
Keep track of your plants with Tendask
Log the task and set a reminder for the next one. Every plant keeps its own history, so there is nothing to guess at.
Related plants
The plants below are in the same botanical family (Apiaceae).
Sources about the plant: Alabama Cooperative Extension System, Bayerische Landesanstalt für Weinbau und Gartenbau, GBIF Backbone Taxonomy, KGZS Zavod Ljubljana, KGZS Zavod Nova Gorica, NC State Extension Plant Toolbox, Penn State Extension, Royal Horticultural Society, Semenarna Ljubljana, Smernice za strokovno utemeljeno gnojenje (Mihelič et al., MKGP 2011), Utah State University Extension, Wikidata. Checked between 14 and 26 August 2026. The problem descriptions also draw on: EPPO Global Database, University of Maryland Extension.