How to grow Watermelon plant

Watermelon plant grow and care – – herbaceous of the genus Citrullus, Watermelon plant annual plant grow as semi vine, can grow mediterranean, desert, subtropics, temperate or tropics climate and growing in hardiness zone 4+.in hardiness zone 4-7 need to care that will bear fruits.

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Leaves color green and the leaves shape deeply lobed.

Flower color yellow, the flower has with five lobs, female contain semi fruits that looks like a little Watermelon plant, and male flower are smaller

Watermelon plant edible fruits

Fruit juicy sweet big in the color: red, yellow, orange, peel green, sometimes there is stripes or dots, is edible and mostly used for pickles, the structure of the rind smooth or rough structure.

Seeds edible color white peel and the inner green

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Requirements for Watermelon plant growing and care:

Mulch keep the moist of the soil and also protect the fruits

How to care:
Watering on the ground and not watering on the leaves or the fruits, need trellising

What is the best way to start growing?
Seedling / Seed (explanation bellow)

Is it necessary to graft or use vegetative reproduction?
No, possible to graft for better base that will be resistant for virus

Difficulties or problems when growing:
Attacked easily, when the plant attacked in the base if not treatment well it will die

Planting season:
Spring to summer, but better in the spring and in hardiness zone 4-7 need to start in the middle of the winter indoor, the plant need enough hot days when mature to bear fruits without, if the plant won’t be with mature fruits in the autumn or the plant won’t bear fruits or the fruits will die before fully ripen, also better to choose cultivar that bear the fruits faster.

How to plant:
Planting in well ventilated soil, dig bigger hole than the plant and put organic matter, humus and dead leaves

Pests and diseases:
Powdery mildew, aphids

Pruning season:
All season

How to prune:
No need to prune

Size of the plant?
1-2 m, 40-80 inches

Growth speed in optimal condition:
Fast growing

Water requirement:
Big amount of water

Light conditions in optimal condition for growing:
Full Sun

Is it possible to grow indoor as houseplant?
No

Growing is also possible in a planter /flowerpot / containers:
Yes, planting in containers need to be at least 10-20L (2.5-5 gallons) depend on the cultivar, well-drained soil, the plant not react well to overwater, need to make enough holes in the container for good drainage also choosing soil for container important and need to be soil well ventilated, can be potting mix or peat soil with perlite, when use bottom for the pot need that it will dry in the same day.

Blooming information

Bloom season:
Late spring to summer

General information about the flower
Yellow flower with five lobs, female contain semi fruits that looks like a little Watermelon plant, and male flower are smaller

Thinning the bloom:
Sometimes happened because disease or not enough water

Pollination is done by:
Bees and more pollinators, by hand

Edible fruits

Fruit harvest season:
Summer to autumn

Fruits pests or diseases:
Powdery mildew

What can be done with big quantities of Watermelon plant fruits?
Fruit: eaten raw, juice. Rind: pickles, Seeds: salad, raw

Work requirements on the fruit:
Sometimes to space it from the ground

How long does it take to bear fruit?
80-120 days

Grow from seeds

Sowing requirement:
Easy to sow no special treatment, sowing temperature 15-40C (65-104F) but better to sow in 21-25C (70-77F)

Saving seeds until sowing:
Room temperature, dry place

Sowing season:
Spring (but in warm weather possible in the summer) and in cold climate start in the winter indoor

How to plant:
Better to plant it in light soil that will be well ventilated and keep the moist like vermiculite

Planting spacing – How far apart to plant:
Depend if trellising 40*50cm (16*20 inches) when crawling 1*1.25m (40-50 inches), sowing to transplanting 5*5cm (2*2 inches)

Germination time:
4-20 days

Conditions for seeds germinate:
Moist soil, full sun

Watering requires for Seeds:
Average amount of water, don’t let it dry

Germination time:
5-20 days

Condition of seedling:
Warm weather, big amount of water, full sun, place to trellising

Subspecies

Crimson Sweet – a dark striped Watermelon plant that weighs around 20 to 25 lbs and has red, juicy flesh. Crimson sweet is a very sweet Watermelon plant with a high sugar content. The flesh contains small seeds and it is known to resist various diseasses that can plague Watermelon plants. 85 days to maturity.

Sugar Baby – the number one red icebox sized Watermelon plant.

Orangeglo – an unusual and great tasting orange Watermelon plant.

Blacktail Mountain – one of the earliest red Watermelon plants.

Cream of Saskatchewan – a cream colored tasty Watermelon plant.

Sweet Siberian – a very sweet and juicy apricot colored Watermelon plant.

Black Diamond – a classic Watermelon plant with a dark rind with red flesh.

Moon & Stars – a deep green skinned speckled Watermelon plant with golden yellow stars and moons.

Georgia Rattlesnake – a southern favorite Watermelon plant with stripes that resemble a rattlesnake.

Osh Khirgizia – a sweet pink russian variety with yellow-green and jagged dark green stripes.

Ali Baba – a light colored Iraqi Watermelon plant with excellent taste.

Scientific name:

Citrullus lanatus var. lanatus

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Categories

Blooming Seasons
  • Spring flowers
Edible Parts
  • Edible Fruit
  • Edible Seeds
Culinary uses
  • Eaten raw
  • Fruit
  • Ice pop & Ice cream plants
  • Juice
  • Pickles
Flower colors
  • Yellow flower
Climate
  • Desert Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Temperate Climate
  • Tropics Climate
Harvest Season
  • Summer Harvest
Plant growing speed
  • Average growing plants
  • Fast growing plants
Plant life-form
  • Annual plant
  • Herbaceous
Plant Uses
  • Ornamental plants
Planting Season
  • Spring Planting
Plants sun exposure
  • Full sun Plants
Watering plants
  • Regularly water
Hardiness zone
  • Hardiness zone 10
  • Hardiness zone 11
  • Hardiness zone 12
  • Hardiness zone 13
  • Hardiness zone 4
  • Hardiness zone 5
  • Hardiness zone 6
  • Hardiness zone 7
  • Hardiness zone 8
  • Hardiness zone 9

Growing in Pots, Balconies & Indoors

Watermelon is a sprawling, sun-loving vine that thrives in full sun, so it is not a houseplant – but grown in a large, free-draining pot it does well on a sunny balcony, patio or terrace. Give it room to trail and something to ramble over.

Quick Details

  • Container Size: 10-20 L (2.5-5 gal), depending on the cultivar
  • Indoor Suitability: Not an indoor houseplant – it needs full sun; at most a compact cultivar on the very sunniest windowsill
  • Best Spot: Full sun – the brightest, warmest spot on a balcony or patio
  • Soil & Drainage: Well-drained, well-ventilated mix (potting mix, or peat/coir with perlite) with plenty of drainage holes
  • Watering in Pots: Keep evenly moist but never waterlogged – it dislikes overwatering, and pots dry fast in the sun

Indoors & On the Windowsill

  • Not a houseplant: The grower keeps it out of the house – indoor light is far too weak for this sun-loving crop.
  • Windowsill limits: Only the very sunniest windowsill could support a compact cultivar; most plants of this size are better off outdoors.
  • Annual, so no overwintering: This is a warm-season annual – rather than overwintering it, simply resow when the weather warms.

On a Balcony or Patio

  • Light & wind: Give it the sunniest, most sheltered spot; train or let the vine trail and shelter it from wind; walls and paving reflect a lot of heat, so containers dry quickly – check moisture daily in warm weather.
  • Practicalities: A full, wet pot is heavy, so make sure the balcony can take the weight, and manage drainage runoff.

Choosing the Pot, Soil & Long-Term Care

  • Pot & drainage: Use a 10-20 L (2.5-5 gal) pot with plenty of drainage holes; the grower stresses this crop does not tolerate overwatering, so never leave it standing in water (root rot). Terracotta breathes and dries faster; glazed or plastic holds moisture longer.
  • Potting mix: A well-aerated, well-ventilated mix – potting mix, or peat/coir with perlite – as the grower recommends.
  • Feeding: Potted plants need feeding more often than those in the ground, since watering leaches nutrients from the mix – feed regularly through the growing season.

Grower’s Container Tip

  • Watch the saucer: If you stand the pot on a tray or saucer, make sure it dries out the same day – never let the roots sit in collected water.

Bloom & Flower Guide

Quick Details

  • Bloom Season: Late spring through summer
  • Time to First Bloom: Within the first season, several weeks after sowing once the vines are established
  • Flower Appearance: Yellow blooms with five lobes; separate male and female flowers on the same plant, the female carrying a tiny immature ovary behind the bloom
  • Edibility: The flower is not usually eaten; this plant is grown for its fruit

Detailed Blooming Overview

Watermelon is monoecious. The small yellow flowers open one by one; males usually appear first, then females, each with a tiny immature fruit behind the petals. Bees are the main pollinators and each female needs several visits to set a well-shaped melon, so hand-pollination can help when bees are scarce.

Flower Characteristics

  • Yellow, five-lobed blooms
  • Separate male and female flowers on the same plant; the female shows a miniature fruit at its base
  • Male flowers are usually smaller and often open first

Bloom Care & Thinning

  • Pollination: Carried out by bees and other pollinators; where they are scarce you can hand-pollinate by brushing pollen from a male bloom onto a female.
  • Flower drop & poor set: Blooms sometimes fail or drop after disease or a dry spell; steady watering and, if pollinators are scarce, a little hand-pollination usually put it right.

Bloom Health & Protection

  • Aphids: Gather on tender buds and shoot tips; a jet of water or insecticidal soap keeps them in check.
  • Powdery mildew: Can coat the leaves and sap flowering vigour in humid spells; better airflow and a sulfur- or neem-based treatment help.