Bulbs
Flower Basics
Flower Beds & Specialty Gardens
Flower Garden
Garden Furniture
Garden Gnomes
Garden Seeds
Garden Sheds
Garden Statues
Garden Tools & Supplies
Gardening Basics
Green & Organic
Groundcovers & Vines
Growing Annuals
Growing Basil
Growing Beans
Growing Berries
Growing Blueberries
Growing Cactus
Growing Corn
Growing Cotton
Growing Edibles
Growing Flowers
Growing Garlic
Growing Grapes
Growing Grass
Growing Herbs
Growing Jasmine
Growing Mint
Growing Mushrooms
Orchids
Growing Peanuts
Growing Perennials
Growing Plants
Growing Rosemary
Growing Roses
Growing Strawberries
Growing Sunflowers
Growing Thyme
Growing Tomatoes
Growing Tulips
Growing Vegetables
Herb Basics
Herb Garden
Indoor Growing
Landscaping Basics
Landscaping Patios
Landscaping Plants
Landscaping Shrubs
Landscaping Trees
Landscaping Walks & Pathways
Lawn Basics
Lawn Maintenance
Lawn Mowers
Lawn Ornaments
Lawn Planting
Lawn Tools
Outdoor Growing
Overall Landscape Planning
Pests, Weeds & Problems
Plant Basics
Rock Garden
Rose Garden
Shrubs
Soil
Specialty Gardens
Trees
Vegetable Garden
Yard Maintenance
When to Plant Corn in Oregon?
When to Plant Corn in Oregon?. The topographical variations of Oregon have broken this Pacific Northwest state into four different gardening zones. Sweet corn can be grown in all, with variable start dates. Because corn is not transplanted, this crop cannot be started early in the greenhouse.
The topographical variations of Oregon have broken this Pacific Northwest state into four different gardening zones. Sweet corn can be grown in all, with variable start dates. Because corn is not transplanted, this crop cannot be started early in the greenhouse.
Growing Requirements
Test the earth with a soil thermometer to ensure that the ground has reached the required 60 degrees Fahrenheit for sweet corn. Make sure you have passed the last date of frost for your area, or your sprouts will freeze. In Oregon, it takes sweet corn 70 to 100 days to reach maturity.
Zone 1 and Zone 2
Plant corn in the coastal range of Zone 1 in April or May. The valleys from Portland to Roseburg comprise Zone 2, where corn can be started from April to June.
Zone 3 and Zone 4
Cool temperatures linger in Zone 3, which includes Oregon's mountain ranges, higher elevations and most the central and eastern state. May to June is the ideal time to plant corn in Zone 3. Zone 4, made up of the northern Columbia River valleys and a small pocket around Pendleton, provides for warmer temperatures that allow corn to be planted from April 15 through June.
