Onion Growing Guide
Onion
Growing onion can be rewarding for both the beginner and the seasoned gardener. Whether you grow to unwind from stress or to enjoy more nutritious and flavorful produce, your garden provides a sense of accomplishment and pride.
Do you want to grow onion but are not quite sure where to start? This guide will help you learn the basics of planting, growing, and caring for onion in Utah and the Mountain West.
Growing Guide
This growing guide offers planting information and helpful resources to give you the tools needed to succeed.
Growing Guide — Onion in the Garden
Utah State University Extension
Growing Zones and Frost Dates
Onion is a cool-season crop that grows best in mild weather. Knowing your growing zone and local frost dates helps you choose the best planting window for spring, fall, or cool-season harvests.
Problem Solver
Watch onion for common garden problems such as poor germination, onion thrips, yellowing leaves, compacted soil, inconsistent watering, and weed competition. Loose soil and steady moisture help plants grow stronger.
Companion Planting
Onion can grow well near carrots, beets, lettuce, cabbage-family crops, herbs, and flowers that attract beneficial insects.
Where to Purchase
Look for onion seeds, starts, roots, slips, or transplants at local garden centers, nurseries, seed companies, or Utah-friendly plant suppliers.
Favorite Recipes
Coming soon.
Final Thought
Learn how to grow delicious onion in your own garden. With the right growing guide, healthy soil, local frost-date knowledge, and regular observation, gardening in Utah and Southern Utah can be easier and more successful.