Garden Pea

Garden pea (Pisum sativum), called matar across Pakistan, is the standard cool-season legume in nearly every winter kitchen garden from the Punjab plains up into the Pothohar plateau and the KPK hills. Recent genome work has actually shifted the accepted name to Lathyrus oleraceus, though POWO and most growers still index the crop under Pisum sativum.¹ For a food-forest grower laying out a rabi-season understory, it is a productive, soil-building annual climber that fits the trellis space tomato vacates in October.

Where it thrives

Pea is a strict cool-season crop. Optimal growing temperatures sit between 13 and 18 degrees Celsius, and yields collapse once the canopy crosses about 25 degrees, which causes pollen sterility and aborts pods.²³ The seed germinates at soil temperatures as low as 5 to 7 degrees and tolerates light frost as a young plant.³ It prefers a well-drained loam at pH 6.0 to 7.5, dislikes waterlogging, and shuts down on heavy salt.³ In Pakistan the practical window is mid-October to mid-November sowing in Punjab and Sindh, late February in the higher KPK and Balochistan valleys where snow risk pushes spring back.

Role in the system

Pea is a pioneer-tier annual climber and a nitrogen fixer. The roots host Rhizobium leguminosarum, which fixes atmospheric nitrogen and feeds into the soil pool used by the next crop in the rotation.² In a guild that means it covers two jobs at once: it climbs a trellis, stake, or maize stalk to occupy the vertical understory, and it leaves residual nitrogen behind for a following maize, brassica, or summer cucurbit. Treat it as a short-window fertility plant; let the haulm rot in place rather than pulling it out.

Growing it

Decisions worth getting right. Sow seed directly 2.5 to 4 cm deep, 5 to 8 cm apart in the row, with rows 60 cm apart for vining cultivars and 45 cm for bush types.³⁴ Inoculate fresh seed with a pea-specific rhizobium if the bed has not grown peas before. Stick the trellis the same week you sow, before the first tendril searches for support. Water steadily through flowering and pod fill but avoid soaking; powdery mildew, fusarium wilt and aphid-borne virus are the main losses, and resistant cultivars do most of the disease work for you.⁴ Harvest shelling peas when the pod is plump but still bright green, and pick every two to three days to keep new pods setting.

What you get

A well-managed irrigated crop yields 8 to 12 tonnes per hectare of fresh green pods on a 60 to 90 day cycle, with dry-pea cultivars going longer for storage.² The seed carries 20 to 25 percent protein on a dry basis plus iron, magnesium, phosphorus and zinc, which is why matar shows up in winter salan, pulao and stuffed paratha alongside potato.² Haulm makes good fodder once pods are off.

Sourcing notes

Pakistani growers can pick up local cultivars like Climax, Meteor and Olympia from NARC and Ayub Agricultural Research Institute, Faisalabad; saved seed from open-pollinated types comes true year to year. Sow pea next to a frame crop such as maize stubble or sunflower stalk to skip building a separate trellis, and follow it with a heavy feeder like brinjal or chilli to use the residual nitrogen. Do not plant pea after pea on the same bed; rotate at least three seasons to break root rot cycles.

Sources

1. Royal Botanic Gardens, Kew (2024). “Pisum sativum L.” Plants of the World Online.
2. Kumar, P. et al. (2025). “Integrated agronomy of pea (Pisum sativum L.): a review on cultivation, harvesting, and storage for sustainable agriculture.” Frontiers in Plant Science.
3. University of Minnesota Extension (2024). “Growing peas in home gardens.” University of Minnesota Extension.
4. Clemson Cooperative Extension (2023). “Garden Peas.” Clemson Home & Garden Information Center.