Planting: Container trees can be successfully planted in the month of September even though the weather hasn't cooled down yet. It is very important to keep the trees watered until adequate rainfall occurs.
Transplanting: Fall and winter months are the best time to transplant.
Fertilizing: This is the last month of the year you would want to fertilize.
Pest Control: It is unlikely this late in the year that pest-control will be necessary, but keep an eye out for any abnormal changes in your trees.
Pruning: Spring flowering trees have set their flower buds for next year and should not be pruned. Continue to prune any damaged or dead limbs.
Watering: Temperatures may become milder during this month but it can still be dry. Make sure that you keep enough water on recently planted trees and use sprinklers on larger, established trees.
Planting: Container roses can still be planted but require deep watering whenever we go 5 – 7 days without a good rain of 1 to 1 ½ inches.
Transplanting: It is still to hot to transplant roses this month.
Fertilizing: This is the last fertilization required for this season.
Pest Control: Blackspot, powdery mildew, spider mites, aphids are still active through the fall.
Pruning: If you didn't cut back your roses in late August should be cut back in early September.
Watering: Supplemental watering is still necessary if rainfall amounts are less than 1 to 1 ½ inch every week.
Planting: This is the last month to plant warm-season lawn seeds.
Fertilizing: Wait till the end of October to winterize your Texas lawn.
Pest Control: Watch for army worms – they chew grass blades and can make the lawn look terrible.
Mowing: Don't let your grass get overgrown before mowing.
Watering: Water as needed.
Planting: Temperatures are still hot but just like June, July and August container grown shrubs can successfully be planted during this time of the year.
Transplanting: September is not a good time to transplant.
Fertilizing: For plants with off color this is usually a god moth to fertilize one last time during the active growing season. Use a slow- release fertilizer not a quick-release one.
Pest Control: The same pests that have been around all summer may continue this month.
Pruning: Do not prune any winter or spring flowering shrubs at this time.
Watering: Keep up the good work in applying water to your plants. This should be the last month of hot temperatures for the year.
Planting: Perennials started from seeds earlier this year are probably large enough to go into the garden now. You can also plant container grown perennials during this month.
Transplanting: Day-lilies and iris may be divided now.
Fertilizing: Perennials that have finished blooming for the year should not be fertilized now. Any perennials showing nutrient deficiencies may be fertilized, but use a water soluble fertilizer to deliver nutrients immediately.
Pest Control: Pests have had all summer to build up population levels. Be on the lookout and treat with the proper aids.
Pruning: Continue deadheading and remove any spent stalks, etc.
Watering: Water as needed using sprinkler, soaker hoses or drip irrigation.
Planting: It is too late to plant summer bulbs and too early to plant spring bulbs.
Transplanting: You can divide and transplant iris calla lily and Lousiana irises.
Watering: Water as needed, especially if the weather is hot.
Pest Control: Don't let your guard down yet – pests that have been a problem all summer are still around.
Planting: It is too early to plant cool-season annuals
Fertilizing: Container plantings need to be fed with a soluble fertilizer but annuals in flower beds don't require any fertilizer this late in the season.
Pest Control: Whiteflies can be found on lantana and hibiscus but can be controlled.
Watering: Make sure that your annual beds receive enough water through either rainfall or supplemental irrigation.