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How to Start Cucumber Seeds Indoors

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How to Start Cucumber Seeds Indoors

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Overview

Cucumbers, a warm-weather vegetable, are often started from seed. Planting the seed indoors allows you a head start on the summer gardening season. Cucumbers have sensitive roots that do not tolerate disturbance well. Use biodegradable peat pots for indoor seed-starting. These pots are planted directly into the garden bed, where they then break down, so the cucumber roots are not disturbed. Plant cucumber seeds indoors four weeks before the last expected spring frost so that the plants are not too large at transplanting, advises the University of Minnesota extension.

Step 1

Fill 3-inch diameter peat pots with a well-drained potting mix. Leave a ½-inch space between the top of the potting mix and the pot's rim.

Step 2

Sow one cucumber seed per pot, planting it ½ inch deep. Water the potting mixture until the excess moisture begins draining from the bottom of the pot.

Step 3

Cover the pots with a plastic bag, which helps retain soil moisture during germination. Place the pots in a 65- to 75-degree F room.

Step 4

Remove the bags once seedlings emerge, usually within seven days. Place the pots in a warm, sunny windowsill.

Step 5

Water the seedlings when the soil surface just begins to feel dry. Empty the drip tray under the pots after watering, because standing water can damage seedlings.

Tips and Warnings

  • The rim of the peat pot wicks moisture away from the cucumber if the rim protrudes above the soil surface. Tear the rim off the pot prior to planting to prevent this from occurring.

Things You'll Need

  • Peat pots
  • Potting mix
  • Seeds
  • Plastic bag

References

  • University of Minnesota Extension: Growing Cucumbers in Minnesota Gardens
  • Purdue Extension: Starting Seeds Indoors
Keywords: seeding cucumbers indoors, vegetable seed starting, growing cucumbers

About this Author

Jenny Harrington has been a freelance writer since 2006. Her published articles have appeared in various print and online publications, including the "Dollar Stretcher." Previously, she owned her own business, selling handmade items online, wholesale and at crafts fairs. Harrington's specialties include small business information, crafting, decorating and gardening.