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Gardening & Horticulture Tips

Gardening Advice

Horticulture and gardening tips, produced by the OSU Extension Service, is a monthly update featuring gardening advice, current horticulture topics, and events for Oklahomans. Each month offers timely reminders for gardening and lawn care.

Gardening Tips

Garden Tips for Early to Mid-September

September 3, 2026

Get garden tips for early to mid-September for trees, shrubs, flowers, vegetables, lawns, turfs, fruits and nuts in Oklahoma.

Garden Tips for Early to Mid-August

July 31, 2026

Get early to mid-August gardening tips for trees, shrubs, flowers, vegetables, lawns, fruit trees and general landscape care in Oklahoma.

Garden Tips for Mid-to-Late July

July 17, 2026

Find July gardening recommendations for lawns, vegetables, trees, shrubs, flowers and fruit, including watering, mulching and pest control.

Garden Tips for Early to Mid-July

July 10, 2026

Learn how to care for trees, flowers, vegetables, lawns and fruit crops with expert advice on watering, pest management, pruning and summer maintenance.

Hort Tips

Warm Fall: When Should Fall Preemergence Herbicides Be Applied?

September 18, 2026

Learn when to apply fall preemergence herbicides in Oklahoma during warm fall weather, including timing, split applications, and proper activation.

Fall Flowers for Fall Pollinators

September 16, 2026

Support fall pollinators in Oklahoma with late-blooming plants like asters, goldenrods and azure blue sage that provide essential nectar and pollen.

Planting Garlic in the Home Garden

September 16, 2026

Learn how to plant, grow, and care for garlic in Oklahoma, from variety selection to soil preparation and planting.

Cover Crops to Build Garden Soil

August 26, 2026

Learn how to use fall and winter cover crops in Oklahoma vegetable gardens to improve soil health, suppress weeds, prevent erosion and add nutrients.

Shackelford Virtual Session

Monthly topics

These Zoom Meetings, designed for both consumers and green industry professions, are free with expenses defrayed due to the continued generosity of Charles and Linda Shackelford, former co-owners of TLC, Oklahoma City. Each month a different topic is covered by various speakers throughout the United States. 

Topic Information