How to Grow Watermelon (Tarbooz) at Home in Pakistan

Watermelon, commonly called tarbooz (تربوز), is a warm-season fruit that grows on a long vine rather than a tree. It needs strong sunlight, warm soil, regular water and plenty of open space.

Most varieties take around 75 to 100 days from sowing to harvest. The vines may spread 10 feet or more, so gardeners should decide where they will grow before planting the seeds.

In much of Pakistan, watermelon seeds are sown from January to March depending on the local climate. The main local watermelon season begins as fruit starts reaching markets from April into the early summer months. Later harvests are possible in cooler northern areas.

Quick Guide

Growing Detail	Recommendation
Best season	Warm spring and early summer
Punjab sowing time	Mid-January to March, depending on local temperature
Germination temperature	Warm soil, preferably around 24°C to 32°C
Germination time	Usually 5 to 10 days
Sowing method	Direct sowing or careful transplanting
Sowing depth	Around 1 inch
Plant spacing	Approximately 3 to 5 feet
Sunlight	At least 6 to 8 hours
Container size	At least 15 to 20 gallons for one plant
Vine length	Commonly 10 feet or more
First flowers	Often 5 to 7 weeks after sowing
First harvest	Usually 75 to 100 days after sowing

Best Time

Watermelon grows best when the soil and weather are consistently warm. Cold soil can delay germination or cause the seeds to rot.

The sowing date also affects harvest time. A plant started early in suitable weather has more time to develop fruit before extreme summer heat or heavy monsoon rain arrives.

In southern Punjab, including Multan and Bahawalpur, seeds can be sown from mid-January through March. Early planting allows the fruit to develop before the most severe summer heat.

In Lahore, Faisalabad and the central Punjab plains, February to March is the main sowing period. Wait if the soil remains cold after winter or if a late cold spell is expected.

In Islamabad and Rawalpindi, sow from March to April once the nights become milder and the soil has warmed.

In Karachi and coastal Sindh, January to March is a useful sowing window. Good airflow and drainage become increasingly important as humidity rises later in the season.

In colder northern and hilly areas, sow from April to May after the danger of frost has passed. Choose an earlier variety where the warm season is short.

The dates printed on a packet are general guidance. Warm soil, mild nights and enough remaining time before cold weather are more important than following one fixed date.

Choosing a Variety

Watermelon varieties differ in fruit size, shape, rind pattern, flesh colour and the number of days needed for maturity.

A smaller or earlier variety is easier to manage in a limited home garden. Large-fruited varieties need stronger vines, more root space and a longer period of warm weather.

Standard Watermelon Seeds are suitable for gardeners who want the familiar summer tarbooz grown in Pakistan.

Zebra F1 Hybrid Watermelon is another option with a striped rind appearance. As with any Hybrid seed, follow the maturity and spacing information provided for that particular variety.

Browse watermelon, melon and other seasonal options in our Fruit Seeds collection.

Space Planning

Watermelon vines naturally spread along the ground. A healthy vine may travel 10 to 15 feet or more, with side runners extending in different directions.

Choose the growing position before sowing. The vine can be guided along the edge of a garden bed, beside a wall, around a rooftop boundary or across an unused sunny area.

Do not plant beside a path that must remain open. Moving an established vine repeatedly can twist its stems or damage developing fruit.

Keep plants approximately 3 to 5 feet apart. The exact distance depends on the variety and whether the vines can be directed into separate areas.

A raised bed works well when the vine can trail outside the bed. The roots remain in the prepared soil while the runners spread over the surrounding area.

Pots and Bags

Watermelon can grow in a container, but the container must support a large root system and a moisture-hungry vine.

Use one plant in a container holding at least 15 to 20 gallons of potting mixture. It should be around 18 to 24 inches wide with a similar useful soil depth.

A 15-Gallon Grow Bag can support a smaller watermelon variety when it is filled with a fertile, well-draining mixture and watered carefully. A 20-gallon container gives the roots more space and dries more slowly.

Small pots create several problems:

• The soil dries too quickly
• Roots become crowded
• The vine struggles to support developing fruit
• Fertilizer salts build up more easily
• The container may tip as the vine pulls outward

Position the container before filling it. A large pot containing wet soil is difficult to move without damaging the vine.

Ground or Trellis

Allowing the vine to spread on the ground is the simplest method. Keep the fruit away from standing water and wet soil by sliding a flat board, tile or thick layer of dry straw underneath it.

Do not rotate or lift an enlarging watermelon unnecessarily. The stem can twist or break.

Vertical training is possible for small-fruited varieties, but the support must be much stronger than a basic plant net. Secure the frame firmly to a wall, railing or fixed posts.

Each developing watermelon needs its own sling. Use a wide piece of breathable cloth or netting that expands as the fruit grows. Tie the sling to the support instead of hanging its weight from the vine.

Large-fruited varieties are normally safer on the ground.

Soil Preparation

Watermelon prefers loose, fertile soil with good drainage. Sandy loam is particularly suitable because it warms quickly and allows roots to spread.

In a garden bed, loosen the upper 8 to 12 inches. Mix mature compost into the soil before sowing. A raised planting mound improves drainage where the soil is heavy.

For containers, use a balanced potting mixture rather than ordinary garden soil alone. A practical mixture can include:

• Two parts loose potting soil
• One part compost or Vermicompost
• One part coco peat
• Perlite or another suitable drainage material

The mixture should retain moisture without remaining muddy. Water must be able to leave the bottom of the container freely.

Water the prepared soil before sowing. It should be evenly damp without dripping when squeezed.

How to Sow

Direct sowing is usually the easiest method because watermelon roots dislike rough handling.

1. Make a hole around 1 inch deep in the damp soil.
2. Place two or three seeds in each planting position.
3. Cover with loose soil and press very lightly.
4. Water gently without exposing the seeds.
5. Keep the area warm and evenly moist until seedlings appear.

After the seedlings develop one or two true leaves, keep the strongest one and cut the others at soil level. Pulling them can disturb the roots of the remaining plant.

In a garden mound, more than one plant can sometimes be retained when enough space has been provided. In a container, keep only one plant.

Starting Early

Watermelon can be started in individual nursery pots when the outside soil is still too cold.

Sow one or two seeds in each pot about three to four weeks before the planned outdoor planting date. Give the seedlings warmth and strong light immediately after they emerge.

Move them outside while they are still young and have approximately two true leaves. Keep the root ball together and plant it at the same depth.

Large, root-bound seedlings often struggle after transplanting. Starting too early does not help if the plants must remain crowded in small pots.

Introduce nursery-raised seedlings to outdoor sunlight and wind gradually before moving them into their final position.

Germination

Watermelon seeds commonly germinate within 5 to 10 days when the soil remains warm.

Cool soil is one of the main causes of delayed or failed germination. Excess water can also reduce the air available around the seed and cause rotting.

If the seedlings have not appeared after about two weeks, check whether:

• The seeds were planted much deeper than 1 inch
• The soil was cold
• The container remained waterlogged
• The soil dried completely
• Birds, rodents or ants removed the seeds
• The seed was old or poorly stored

Do not repeatedly dig into the soil to inspect the seeds. A newly formed root can break easily.

After Germination

The first two leaves are smooth seed leaves. The rougher, divided true leaves appear afterwards.

Place the seedlings in full light once they emerge. Insufficient sunlight creates thin stems and widely spaced leaves.

Water around the seedling instead of pouring directly against its stem. The soil should remain moist without staying constantly wet.

Protect young plants from snails, birds and chewing insects. A small seedling can lose most of its useful leaves in one night.

Remove extra seedlings before their roots become tangled. In containers, one strong plant is better than several crowded vines.

Growth Stages

Growth Stage	What to Expect
About 5 to 10 days	Seedlings emerge in warm soil
About 2 to 3 weeks	Several true leaves develop
About 3 to 5 weeks	Long runners begin spreading
Around 5 to 7 weeks	The first flowers may open
Following weeks	Pollinated female flowers begin developing fruit
About 35 to 45 days after flowering	Fruit approaches maturity
Around 75 to 100 days from sowing	Many varieties become ready to harvest

The timing changes with variety, temperature, sunlight and root space. Cool nights or transplant damage can delay the whole process.

Plant Care

Sunlight

Give watermelon at least 6 to 8 hours of direct sunlight daily. Eight or more hours is useful where the plant can be kept adequately watered.

Sunlight supports strong runners, flowering and the development of sweetness. A vine grown in heavy shade may produce many leaves without supporting good fruit.

Avoid surrounding the plant with tall vegetables that block its light. Guide runners towards an open, sunny area.

Watering

Watermelon needs steady moisture from germination through fruit enlargement.

Water deeply enough to moisten the main root area. A small splash that wets only the surface encourages shallow roots and does not support a large vine.

Check containers daily during hot or windy weather. A mature vine in a fabric bag may require watering more often than a plant in an open bed.

Use the soil condition rather than a fixed weekly schedule. Water when the upper layer begins drying, but moisture remains slightly lower in the pot.

Irregular watering can cause poor fruit development or cracking. Constantly wet soil can damage the roots and increase disease problems.

As a watermelon approaches maturity, reduce excessive watering slightly, especially after rain. Do not allow the vine to wilt repeatedly. Sweetness depends on variety, healthy leaves and sunlight, not severe drying.

Water at soil level during the morning when possible. Keeping the leaves wet overnight can increase disease during humid weather.

Mulching

Mulch helps hold soil moisture and keeps weeds under control. Wait until the soil has warmed before placing a thick organic layer around the plant.

Dry straw, clean grass clippings or another light material can be spread over the soil. Leave a small open space around the main stem.

Mulch should not trap water against the stem or block drainage holes in a container.

Feeding

Mix compost or vermicompost into the soil before planting.

Once the plant has three or four true leaves and begins active runner growth, NPK 20-20-20 can be mixed at one teaspoon in 1 litre of water. Apply it to already damp soil and repeat after 10 to 15 days if needed.

When flower buds begin appearing, repeated high-nitrogen feeding can encourage excessive leaves. At this stage, switch to NPK 5-15-45 at one teaspoon in 1 litre of water.

Do not use both fertilizers together at full strength. A plant with poor pollination, root damage or insufficient sunlight will not improve simply because more fertilizer is added.

Follow the product directions, wait at least seven days after feeding before harvesting, and wash the fruit before cutting.

Vine Training

Guide runners while they are still young and flexible. Turn them gently towards open spaces instead of allowing every runner to cross the same area.

Avoid stepping on the vines. Even when the stem does not break completely, internal damage can reduce water movement to the leaves and fruit.

Do not remove large numbers of healthy leaves. They make food for the developing watermelon and help protect the rind from direct sun.

Remove leaves only when they are dead, badly diseased or blocking necessary airflow.

Weeding

Remove weeds while they are small. Large weeds become difficult to pull once runners cover the soil.

Watermelon roots can spread close to the surface. Pull gently or loosen only the top layer of soil to avoid damaging them.

Flowers

Watermelon produces separate male and female flowers on the same plant.

Male flowers grow on thin stems. A female flower has a small round swelling directly behind its petals. This swelling becomes a watermelon after successful pollination.

Male flowers normally appear first. Several early flowers may fall before the first female flower opens.

Each female flower remains ready for pollination for a short time. Cool, rainy, windy or extremely hot weather can reduce bee activity during this period.

Avoid spraying open flowers while bees and other pollinating insects are visiting.

Hand Pollination

If bees are scarce, transfer pollen by hand during the morning while the flowers are fresh.

1. Pick an open male flower.
2. Remove its petals without damaging the centre.
3. Find an open female flower with a small watermelon behind it.
4. Gently touch the pollen-covered male centre against the female flower’s centre.
5. Repeat with another male flower when available.

A small soft brush can also be used.

The tiny fruit may still stop growing if the vine is severely dry, overheated or suffering from root damage. Check the whole plant before assuming every failed fruit resulted from poor pollination.

Fruit Care

Once a fruit begins enlarging, keep the soil moisture steady and protect the rind from damage.

For fruit growing on the ground, slide a dry board, tile or bed of straw underneath it. This reduces contact with wet soil and makes the underside easier to inspect.

Do not cover the watermelon completely with plastic. Trapped heat and moisture can damage the rind.

Keep enough healthy leaves around the fruit to provide some protection from intense sunlight. Sudden exposure after heavy pruning can cause a pale, sunken or scorched patch.

If a container vine begins supporting more fruit than its roots can manage, some fruit may remain small. Healthy leaf growth, root space and watering determine how much the plant can carry.

Heat Care

Temporary midday wilting can happen during extreme summer heat even when the soil still contains moisture.

Check the plant again after sunset. If the leaves recover, avoid immediately flooding the root area.

On exposed rooftops, place the container where it receives morning and midday sun but has some protection during the most severe late-afternoon heat. Raising the container slightly above hot concrete can reduce heat around its base.

Keep watering steady during flowering. Severe heat combined with dry soil can stop female flowers and young fruit from developing.

Common Problems

Problem	What to Check	What to Do
Seeds fail to germinate	Cold soil, excess water, deep sowing or old seed	Sow fresh seed about 1 inch deep in warm soil
Seedling stem collapses	Cool, soggy soil or poor airflow	Remove the affected seedling and improve drainage
Vine grows slowly	Cold weather, root damage or insufficient sunlight	Keep the plant warm and avoid disturbing its roots
Many flowers but no fruit	Male flowers appearing first or weak pollination	Wait for female flowers and support morning pollination
Tiny fruit turns yellow	Poor pollination, heat, dry soil or root stress	Check moisture and pollinate fresh female flowers
Fruit remains small	Cramped roots, crowding, weak leaves or inconsistent water	Improve root space and maintain steady care
Fruit cracks	Heavy watering after a dry period	Avoid sudden dry-to-wet changes
Fruit rots underneath	Contact with wet soil or damaged rind	Place a dry board or straw beneath the fruit
Dark damage at the flower end	Irregular moisture affecting nutrient movement	Keep moisture more consistent and protect the roots
Leaves become sticky or curled	Aphids or whiteflies under the leaves	Wash off light infestations and inspect new growth
Leaves show pale speckling	Mites or thrips during hot, dry weather	Inspect the undersides and treat active pests
White powder appears	Powdery mildew	Improve airflow and remove badly affected leaves
Leaves develop yellow patches	Wet foliage or possible downy mildew	Water at soil level and remove badly affected material
Leaves become mottled and distorted	Possible virus spread by sap-sucking insects	Remove severely affected plants and control the insects
Rind develops a pale sunken patch	Fruit exposed suddenly to severe sunlight	Keep healthy leaves around developing fruit

For persistent aphids, whiteflies, mites or thrips, Neem Oil can be mixed at 3 to 5 ml per litre of water.

Spray during the cool morning or after sunset and cover both sides of the leaves. Avoid spraying open flowers. Wait 7 to 15 days after spraying before harvesting and wash the rind before cutting.

Harvest Time

Watermelon commonly becomes ready 75 to 100 days after sowing. Earlier varieties may mature sooner, while large varieties or plants growing in cooler conditions can take longer.

Fruit development itself commonly takes around 35 to 45 days after successful flowering.

Watermelon does not separate from the vine when ripe, so use several signs together.

Ground Spot

Check the area where the fruit rests on the soil or its support. It normally changes from white or pale green to a creamy or buttery yellow as the fruit ripens.

Nearby Tendril

Find the small curling tendril growing near the fruit stem. It often becomes brown and dry as the fruit approaches maturity.

The tendril can dry too early on some varieties, so do not use this sign alone.

Rind Appearance

A ripe watermelon often loses some of its glossy appearance. The rind becomes duller and feels firm.

Tapping Sound

A ripe watermelon may produce a deeper sound when tapped, but this test is subjective. Ground colour, tendril condition and the expected maturity period are more dependable when used together.

How to Harvest

Choose a dry day and inspect all the ripeness signs before cutting.

Use a clean knife or cutter to separate the fruit from the vine. Leave a short section of stem attached instead of pulling or twisting the watermelon.

Handle the fruit carefully. A hard impact can bruise or crack the flesh even when the rind remains mostly intact.

Watermelon does not become sweeter after being removed from the vine, so avoid cutting it very early.

Storage

Keep an uncut watermelon in a cool, shaded place and use it reasonably soon. Storage life becomes shorter during Pakistan’s hottest weather.

Wash the rind before cutting so dirt and microbes are not carried into the flesh by the knife.

Cover cut watermelon and refrigerate it promptly. Discard pieces that develop a sour smell, slimy surface or unusual soft areas.

FAQs

Can I grow seeds taken from a market watermelon?

Mature black or brown seeds may germinate after cleaning and drying. Soft white seeds are usually immature. If the original watermelon was Hybrid, the new plant may produce fruit that differs in size, colour or sweetness.

Is yellow watermelon unripe?

Yellow-fleshed watermelon is a natural variety rather than an unripe red watermelon. Its flesh colour is controlled by the variety. Use the ground spot, nearby tendril and maturity period to judge ripeness.

Can watermelon cross with cucumber or muskmelon?

Watermelon does not normally cross with cucumber or muskmelon. Two watermelon varieties can cross with each other, but this affects plants raised from their saved seeds rather than changing the fruit already growing.

Why does a ripe watermelon sometimes contain white seeds?

Some varieties contain soft, undeveloped white seeds alongside mature dark seeds. Their presence does not automatically mean the watermelon was harvested early.

Will a watermelon become sweeter after harvesting?

No. Watermelon does not continue building sweetness after it is cut from the vine. Harvesting at the correct stage is important because an early watermelon may soften during storage without becoming sweeter.