Annual Legume · 6 varieties

Lentil

Lens culinaris

Fabaceae — the same plant family as bush bean, pea, pole bean, cowpea and 9 more here. Relatives share pests and diseases, which is why rotation plans group by family.

Lentil (Lens culinaris) is an annual legume. It wants full sun and pH 6–8 soil, with about 0.5–1 in of water weekly. It matures in about 80–120 days from sowing. Watch for aphids and ascochyta blight. Below: its full sourced profile from 3 extension sources, plus a planting calendar timed to your frost dates.

Sun Full sun
Water Low
Matures 80–120 days — from seedest from seed
Mature size 12–20 in
Spacing 1–2 inest
Soil pH 6–8est
Frost Hardy
When to plant lentiltypical · zone 6b
Your zone
…or your ZIP, for your real frost dates

Germinating
Seedlings
Growing
Flowering
Pods filling
Harvest

Typical dates for zone 6b — set your zone or ZIP for yours. This calendar assumes the crop is direct sown. Timing is a guide from the crop's sourced growth stages; confirm with your local frost dates and extension before you sow.

Growing lentilevery fact says where it came from

What we will not put a number on

We do not give a feeding rate for this crop, and that is deliberate rather than a gap. The figures published by extension services are pounds of nitrogen per acre for a production field — they do not convert safely to a raised bed or a pot without knowing your soil test and your fertilizer's analysis, and guessing errs toward burning roots. It is also why every chart you find online disagrees with the next one.

We give watering as a depth per week rather than gallons per plant, because that is how it is actually measured and how the published figures are written. A gallons-per-plant number depends on your spacing, your soil and whether the plant is in a pot — so it would look more precise than it is.

Site & soil

Sun
Full sun
Soil pH
6–8est
Soil texture
Sandy, Loam, Clay, Well drained
Frost tolerance
Hardy

No published figure for the temperature frost starts to hurt it, the temperature that would kill it and a heat limit. We looked — where a number is missing here it is missing from the research, not skipped. The crop’s frost and heat tolerance above still applies.

The plant

Mature height
12–20 in
Mature spread
6–12 inest
Growth rate
Moderateest
Spacing in row
1–2 inest
Between rows
6–12 inest
Planting depth
1–2 inest
Container size
2–5 gal — low end is the minimum, high end is betterest
Support
Self-supporting
Grown from
Direct sow

Water & feeding

Water needs
Low
Water per week
0.5–1 in/wkest
Critical water
Flowering, Pod fillest
Feeding
Low

Timing & fruiting

Days to maturity
80–120 days from seedest
Harvest cues
Lower leaf yellowing

Planted again for autumn

Sow by
early Aug typical · zone 6b

80 days to maturity from sowing, counted back from the first frost above. Not published for anywhere in particular: it is your own frost date and this crop's own figure, which is why it works wherever you are. A days-to-maturity figure is a catalog number for a good season rather than a promise, and a cold month moves it.

Edible parts per source: seed.

What tends to go wrongmost-cited first
PestsAphidsThripsLygus bugsSeed corn maggotWireworms
DiseasesAscochyta blightWhite moldFusarium root rotRhizoctonia root rot

Compiled from the extensions cited below. Which ones actually show up depends on your region — your extension's local list is the last word.

All 6 varietiesthe ones with their own page are linked
Variety Type DaysColorWhat it is known for
Black Beluga Heirloom Black 80 Black
Crimson Red 80–120 Red
Eston Green 80–120
French Green Heirloom Green 100–110 Bicolor
Pardina Heirloom Brown 80–110 Brown
Richlea Green 80–120 University of Saskatchewan Library / Saskatchewan Agriculture records this asgives a heavy crop
Sources3 cited · 3 organizations
  • Plants For A Future
  • UW-Madison Corn Agronomy (Alternative Field Crops Manual)
  • University of Idaho Cooperative Extension Service (College of Agriculture)

We compile bare facts from these university-extension and horticultural sources, never copied prose. 9 of the 19 values on this page carry a citation. The rest are marked est; hover one and it says why — either nobody publishes a figure we could point at, or a person set it and attached no source. Figures vary with climate and seed source; confirm with your local extension before you buy.

Growing more than lentil? Browse all crops, or grab the spacing calculator and frost date lookup. The GardenTrack app (now in beta) remembers what you planted and where, then tells you what to do and when. Join the beta →