Plan the perfect garden with our interactive tool →

How to Grow Cotton Indoors

...
cotton field in contrast with blue sky image by lulu from Fotolia.com

Cotton is a perennial tropical plant that produces cotton bolls that are used to make clothing and other textile goods. Cotton plants enjoy sunny and warm conditions, requiring four to five months of frost-free temperatures to mature. Because many regions don’t have climates like this, growing cotton plants indoors is a great option. You can not only greatly extend your growing season for the cotton plants, but you can also better protect the plants from damaging winds and heavy rains.

Plant the cotton seeds in 3-inch-wide peat pots in groups of two or three seeds. Plant the seeds about ½ to 1 inch deep into the peat pots.

Set the peat pots in a sunny, south-facing window and keep the seeds warmed to about 65 to 68 degrees Fahrenheit. Water the peat pots lightly every other day to keep the seeds slightly damp at all times.

  • Cotton is a perennial tropical plant that produces cotton bolls that are used to make clothing and other textile goods.
  • Set the peat pots in a sunny, south-facing window and keep the seeds warmed to about 65 to 68 degrees Fahrenheit.

Thin out the weaker seedlings in each peat pot after the cotton plant seeds germinate and begin to sprout. Allow one strong, healthy cotton seedling to remain in each pot.

Transfer the cotton plant seedlings into 12-inch-diameter planter pots when their roots begin to outgrow the peat pots. Fill the planter pots with a loam-based potting compost mixture, not one that’s peat-based.

Place the cotton plants outdoors in full sun during days when temperatures are well above 65 degrees and there’s no heavy rain. Bring the plants indoors and place them in a sunny window when temperatures are cooler.

Feed your cotton plants once each week with a liquid plant fertilizer that’s high in potash (potassium) or one designed for tomato plants. Follow the fertilizer dosage instructions on the label.

  • Thin out the weaker seedlings in each peat pot after the cotton plant seeds germinate and begin to sprout.
  • Feed your cotton plants once each week with a liquid plant fertilizer that’s high in potash (potassium) or one designed for tomato plants.

Water the seedling and mature cotton plants two or three times per week to soak the soil around the roots, allowing the top layer of potting mixture to dry slightly between waterings.

Tip

Turn the cotton plant pots about a quarter or half turn each day to ensure that the plants grow straight and not leaning in one direction toward the sunlight.

Warning

Watch out for the red spider mite on your indoor cotton plants. Treat a mite infestation by spraying the cotton plants with an insecticidal soap.

Related Articles

What Type of Plant Is Cotton?
What Type of Plant Is Cotton?
How to Remove Cotton Seed by Hand
How to Remove Cotton Seed by Hand
How to Grow Cotton Indoors
How to Grow Cotton Indoors
How to Grow Stinging Nettles
How to Grow Stinging Nettles
A Description of the Cotton Plant
A Description of the Cotton Plant
The Life Cycle of the Cotton Plant
The Life Cycle of the Cotton Plant
Lowest Temperatures for Pepper Plants
Lowest Temperatures for Pepper Plants
How Long Is the Oat Growing Season?
How Long Is the Oat Growing Season?
Are Chinese Palm Plants Poisonous to Cats?
Are Chinese Palm Plants Poisonous to Cats?
How to Grow Habanero Peppers From Seeds
How to Grow Habanero Peppers From Seeds
How to Grow Helleborus Indoors
How to Grow Helleborus Indoors
How to Grow a Christ in a Manger Plant
How to Grow a Christ in a Manger Plant
Garden Guides
×