plant

Oat

Avena sativa

Updated 4 Aug 2026 · AI-parsed entry

Oat (Avena sativa) — a plant, for Full sun, Medium water. Companions: Common vetch.

What it needs & gives back

↓ Needs

Lightfull sun
Watermoderate
Spacemoderate

↑ Gives back

Organic_matterhigh (straw, green manure)
Ground_covermoderate to high
Mulch_biomasshigh
Oxygenhigh

Companions

Through the year

Emergence

Germination and emergence occur when soil temperatures are consistently above 50C.

Flowering

Flowering typically begins in late spring to early summer, triggered by lengthening days and warm temperatures.

Fruiting

Grain development follows flowering, maturing over several weeks.

Harvest

Harvest occurs when grains are fully mature and dry, typically in mid to late summer.

Senescence

The plant dies back after the first autumn frosts.

Timing is relative to your local season (temperate Northern Hemisphere).

Soil interactions

Drainagewell-drained to moderately well-drained
Nitrogen fixingNo
MycorrhizalYes
Soil textureloam, clay, silt
Organic matterHigh
Compaction toleranceMedium

Propagation

Methodsseed
Difficulty1 / 5
Establishes in~1 yr
Self-seedingModerate

Wildlife & pests

Can host pestsaphids, cereal leaf beetle
Can host diseasescrown rust, stem rust, smut