Texas Gardeners' October Garden Checklist: Planting, Maintenance & Prep for Fall

Fall has officially arrived in Texas, bringing crisp air and the perfect planting window. After summer cleanup, October is the absolute best time to get plants in the ground — they’ll have two cooler months to establish deep roots before winter. Plants installed now and next month will be larger, bloom better, and show greater drought tolerance next year. So grab your trowel and shovel; it’s time to dig.

Planting

Wildflower Seeds

October is ideal for sowing wildflower seeds, whether you want a natural accent or a full meadow. Excellent choices for Texas include bluebonnets, coreopsis, poppies, Indian paintbrush, and Indian blanket. Prepare beds carefully: choose a sunny site, remove existing grass and weeds, incorporate up to 1 inch of compost, sow seeds per package directions, and water thoroughly.

Annual Flowers & Ornamental Plants

Cool-season annuals thrive when planted this month. Top picks: pansies, violas, snapdragons, alyssum, dusty miller, calendulas, poppies, and nasturtiums. If an “Indian summer” brings lingering heat, wait a week until temperatures drop. Use these annuals — plus ornamental cabbage and kale — in containers and at the front of beds for slower-growing accents.

Trees, Shrubs & Perennials

Inspect mature trees and shrubs for lingering damage from last year’s drought and heat — decline often appears a full year later. Remove any failing large plants and replant now. Fall is also prime time for perennials: try salvias, columbine, yarrow, esperanza, and ornamental grasses.

Naturalized Bulbs

Many bulbs (like tulips) need a chilling period that Texas winters (zones 7a–8) don’t reliably provide. Instead, plant naturalized bulbs adapted to the region: daffodils, bearded irises, muscari, spider lilies, oxblood lilies, crocuses, alliums, and anemones. These prefer sunny spots and should be planted at a depth three times the bulb’s width.

Vegetables

Cool-season vegetables are plentiful and nutritious. Plant broccoli, turnips, cauliflower, spinach, Chinese cabbage, cabbage, lettuce, collards, and other greens now. If a hard freeze threatens, use row covers; otherwise these crops will thrive in crisp weather and yield for months.

Ground Covers

Ground covers control erosion, fill shady spots under trees, and add low-growing texture. Good options: Asian jasmine, lamb’s ears, mondo grass, liriope, ajuga, and periwinkle. Match each to its preferred light conditions (sun vs. shade) for lush coverage.

Maintenance

Lawn Care: Watch for Brown Patch

Monitor St. Augustine lawns for “brown patch” disease — dead grass in a doughnut shape with green centers. Check blade bases; they stay green with brown patch. Causes include improper watering/fertilizing and warm evenings. Once confirmed, apply a fungicide per label directions; misapplication on non-affected grass wastes product and harms turf.

Divide Perennials

Divide and transplant wood ferns, cannas, Shasta daisies, bearded irises, violets, and daylilies. Overcrowding reduces blooms. Dig carefully with a garden fork, gently separate root balls, and replant immediately or share divisions — doubling plants at no cost.