Rainline Garden

When to plant melons in Klamath Falls, OR

Plant melons in the garden in Klamath Falls Jun 9–30, either as seeds or as young plants started indoors May 12–19.

Tricky here Plant seeds or young plants

Why these dates

Klamath Falls's typical last spring frost is June 9. Frost kills melons, so planting starts once frost risk drops, around June 9. Keep row cover or a frost blanket handy for the first couple of weeks, since a late frost is still possible. The season is a little tight here, so an early variety is the safer choice.

High desert and mountains. Central and high eastern Oregon. Frost is possible almost any month. Use row covers, wall-o-water or cloches for warm crops, and choose short-season varieties.

Difficulty
Tricky here
Sun
Full sun; the hottest spot you have
Spacing
24 to 36 inches apart
Planting depth
1 inch deep
Frost
Killed by frost
First harvest
About 85 days after planting

Step by step

  1. Start seeds indoors May 12–19 in trays or small pots under a grow light or in your sunniest window. Or skip this step and buy young plants (starts) at a garden center.
  2. Harden off the young plants: about a week before planting, set them outside for a few hours a day, a little longer each day.
  3. Plant them in the garden Jun 9–30, 24 to 36 inches apart. If you plant seeds instead, sow them 1 inch deep.
  4. Water deeply once or twice a week rather than a little every day, and mulch once the soil is warm.
  5. Harvest: Cantaloupes are ripe when the stem slips off with a gentle push. Watermelons are ready when the curly tendril nearest the fruit turns brown and dry.

Varieties that do well here

  • Sugar Baby (watermelon)
  • Minnesota Midget (cantaloupe)
  • Halona (cantaloupe)

Watch out for

Cool soil and cool nights are the main obstacle west of the Cascades. Black plastic mulch and row cover until flowering make the difference.

The toughest heat lover for west-side gardens: choose short-season varieties and use black plastic and row cover. Eastern valleys grow them easily.

Common questions

When is the last frost in Klamath Falls, OR?

Typically June 9. In 9 years out of 10, frost is over by June 26. These are 1991–2020 NOAA climate normals for Klamath Falls Airport.

Is it too late to plant melons in Klamath Falls?

The spring planting window runs through June 30. Later plantings may not have time to produce before the first fall frost, which usually arrives around September 18.

When should I start melons from seed indoors in Klamath Falls?

May 12 to May 19, which is 4 to 3 weeks before the June 9 planting date. Or buy young plants at a garden center instead.

Also plant in Klamath Falls around the same time

Planting dates for melons in nearby areas

Full planting calendar for Klamath Falls · Melons in every city