Karachi's Growing Calendar at a Glance
Karachi sits in a semi-arid subtropical climate zone. Summers are long and intensely hot (April–September, often 35–42°C), winters are mild and dry (November–February, typically 15–25°C), and two short transitional periods in March and October offer a window for crops that suit neither extreme. Rainfall is concentrated in a brief monsoon (July–August) and largely absent for the rest of the year — making irrigation essential for most growing.
Year-Round Planting Calendar — Karachi
| Crop | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lettuce | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – | – | – |
| Spinach | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – | – | – |
| Coriander | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – | – | – |
| Peas | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – | – | – |
| Carrots | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – | – | – |
| Tomatoes | – | – | – | – | ✓ | – | – | – | – | – | – | ✓ |
| Beans | – | – | – | – | ✓ | – | – | – | – | – | – | ✓ |
| Chilies | – | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| Okra | – | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| Cucumber | – | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| Eggplant | – | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| Basil | – | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
Cool Season — November to February
Temperatures 15–25°C | Karachi's most productive growing window for leafy crops, root vegetables, and cool-season herbs
Karachi's mild winters are the most reliable growing season for a wide range of vegetables. The combination of pleasant daytime temperatures, cool nights, and low humidity creates near-ideal conditions for leafy greens, root crops, and brassicas that would bolt or fail entirely in summer heat. This is the season to maximise growing space — crops are less stressed, pest pressure is lower, and many varieties can be direct-sown outdoors without protection.
Lettuce
Direct sow thickly for cut-and-come-again harvest, or space at 25–30 cm for full heads. Sow every 3 weeks for a continuous supply. Bolts rapidly once temperatures rise above 22°C — harvest before February ends.
Easy Fast — 25–35 daysSpinach
Sow direct; thin to 15 cm. Harvest outer leaves from 4–5 weeks. Rich in nutrients and extremely productive in cool conditions. Begin harvesting before March when heat triggers bolting.
Easy Quick harvestPeas
Direct sow November–January; provide a support net or canes. Pick pods regularly to keep plants producing. Dwarf varieties (60 cm) suit containers well. Don't sow after January — warm February temperatures cause early flowering and small yields.
Easy 50–60 daysCarrots
Sow direct in deep, loose, stone-free soil or a deep container (30 cm+). Thin to 6–8 cm once seedlings are 5 cm tall. Avoid transplanting. Harvest from 10–12 weeks. Use thinnings in salads.
Moderate Needs depthRadish
Fastest crop in the garden — ready in 25–30 days. Sow every 2 weeks for a continuous harvest. Excellent gap-filler between slower crops. Harvest promptly or they become woody and bitter.
Very easy 25–30 daysBroccoli
Start transplants November for December–January heading. Cut the central head before it opens into yellow flowers. Leave plants in place for a secondary harvest of side shoots that continues for several weeks.
Moderate 60–80 daysCabbage
Plant transplants in November. Choose compact varieties suited to container growing. Water consistently; irregular moisture causes heads to crack. Harvest when heads feel firm when squeezed from the top.
Moderate 70–90 daysCoriander
The ideal Karachi winter herb. Sow thickly in a deep pot (20 cm+) and succession sow every 3–4 weeks. Crush seeds before sowing to improve germination. Bolts rapidly above 22°C — use the cool season fully and stop sowing by late February.
Moderate 25–35 daysHot Season — April to September
Temperatures 32–42°C | Heat-loving crops thrive; cool-season crops fail. Irrigation is essential throughout.
Karachi's summer is long and intense. Temperatures regularly exceed 40°C in May and June, and the humidity spikes sharply during the July–August monsoon. Most cool-season crops planted in winter will have long since bolted and finished. This is the season for heat-tolerant tropical vegetables that would fail in a UK or northern European climate — crops that actually perform better in heat.
Okra (Bhindi)
Thrives in Karachi's summer heat — one of the most heat-tolerant vegetables available. Sow direct after last cool spell (April). Harvest pods at 8–10 cm for best flavour and to keep the plant producing. Production slows but continues through monsoon.
Easy in heat 50–60 daysAmaranth Greens (Cholai)
One of the few leafy greens that genuinely thrives in summer heat — where spinach and lettuce would immediately bolt. Sow direct and harvest as needed from 4–5 weeks. Nutritious and very easy to grow in Karachi conditions.
Very easy 30–40 daysBasil
Loves Karachi's summer warmth. Sow in April once temperatures are consistently above 22°C. Pinch flower buds as they appear to extend leaf production. Excellent companion plant for tomatoes and chilies — may deter aphids.
Moderate 28–35 daysChilies
A summer staple for Karachi gardens. Start seeds indoors in March, transplant in April. Heat and full sun produce the hottest, most prolific plants. Watch for aphids on new growth — apply neem oil spray at first sign. Can be overwintered and will produce even better the following year.
Moderate 90–120 daysEggplant (Brinjal)
Excellent summer crop for Karachi. Needs a large pot (30+ cm) and strong support as plants become heavy with fruit. Water consistently — irregular moisture causes bitter, pithy fruit. Pick when skin is still glossy; overripe fruit develops seeds and becomes bitter.
Moderate 70–80 daysCucumber
Fast-growing and prolific in summer heat. Train vertically on a trellis to save space and improve air circulation. Harvest daily at 15–20 cm — a fruit left too long suppresses production from the whole plant. High water demand; check daily in peak heat.
Moderate 45–55 daysGourds (Bottle & Bitter)
Bottle gourd (lauki) and bitter gourd (karela) both flourish in Karachi's summer. Give them a strong trellis and generous space — they are vigorous climbers. Pollinate by hand if pollinator numbers are low. Harvest bitter gourd young (15 cm) for best flavour.
Easy in heat 55–70 daysTomatoes (with shade)
Standard tomatoes struggle in Karachi's peak summer — above 35°C flowers drop and fruit fails to set. However, heat-tolerant varieties ('Solar Fire', 'Heatmaster') grown with afternoon shade cloth (30–50%) can produce through early summer before the worst heat arrives.
Challenging in peak heatTransitional Months — March & October
Temperatures 25–35°C | Brief windows for crops that suit neither extreme; ideal for planting long-season crops ahead of the hot or cool season
March and October are Karachi's transitional months — temperatures are moderate but shifting, creating a brief window where neither strictly cool-season nor strictly hot-season crops are at their best. These months are best used to establish long-season crops that will mature into the coming season, or for fast-growing crops tolerant of variable conditions.
Tomatoes & Peppers
Plant transplants in October for a cool-season fruiting crop from December to February. Plant in March for early summer harvest before peak heat arrives. Both windows give 8–10 weeks of productive fruiting if timing is right.
Beans
French beans and climbing beans tolerate a range of temperatures and perform well in both transitional windows. Direct sow in March or October. Fast from sowing to harvest (50–60 days) — often complete before the next temperature extreme arrives.
Beetroot
Sow direct in October for a December–January harvest, or in March for harvest before the summer heat. Thin to 10 cm. Use the thinnings as microgreens in salads — delicious and nutritious.
Local Microclimate Considerations
Karachi's microclimates vary significantly depending on your exact location, floor level, and building orientation. Two balconies in the same neighbourhood can experience meaningfully different growing conditions. Understanding your specific microclimate allows you to adapt the seasonal guidance above to your actual situation.
Sunlight & Orientation
South and south-west facing balconies receive the most summer sun — ideal for chilies, okra, and gourds. North-facing positions receive much less direct sun and are better suited to leafy greens and herbs like coriander and mint. Check how many hours of direct sun your growing space receives in summer before choosing crops.
Coastal Wind & Humidity
Karachi's coastal areas experience higher humidity and sea breeze — beneficial in reducing heat stress in summer but increasing fungal disease risk during monsoon. Increase pot spacing for better airflow in humid coastal locations. Neem oil spray preventatively through July–August reduces mildew and blight risk.
Heat Reflected from Buildings
Balconies surrounded by concrete or glass can be 5–8°C hotter than the ambient temperature in summer — accelerating soil drying and stressing plants. Use light-coloured pots to reflect heat, mulch all pot surfaces, and consider shade cloth (30–50%) for the hottest months of May–June.
Soil Temperature
Black plastic pots in full summer sun can reach 45°C+ — well above the lethal root temperature for most vegetables. Wrap pots in hessian or light-coloured fabric to insulate them, or place inside a larger container with an air gap. Soil temperature matters as much as air temperature for plant performance.
Grow All Year — Pick the Right Season
Karachi's climate is genuinely one of the most productive for year-round growing in Pakistan. The cool winter window from November to February suits a wide range of vegetables that are impossible to grow in summer. The long hot season from April to September opens up tropical crops that thrive in conditions that would defeat a European grower. And the two transitional months offer a third opportunity for long-season crops planted ahead of the next season.
The key is timing. Use this guide as your quick reference, and for a more precise, month-by-month planting schedule tailored to your location, try our What to Plant This Month Tool.