Ask an Expert – Checklist for September yard and garden tasks

Fall is in the air, which may make you want to hang up the rake. Don’t give up just yet, though – you are coming in the home stretch. Consider these fall tips from the USU Extension Gardeners Almanac. Also included are links for further information.

  • Click here if you are interested in saving seeds.
  • Learn about how and when to harvest watermelon and cantaloupe.
  • For storing potatoes, harvest the tubers once the vines have died down.
  • Harvest garlic and onions once the tops have dried down. Allow them to dry for 2-3 weeks before storing.
  • Store potatoes, garlic and onions in a cool/dry location (32-40 F) away from apples.
  • Fall is the perfect time of year for planting trees and shrubs.
  • Go hiking in the hills to enjoy autumn colors.
  • Divide crowded, spring-blooming perennials.
  • Check pears for ripeness once the fruit twists easily off the tree and seeds are dark colored, allowing them to finish ripening off the tree.
  • Early in September, apply a slow-release lawn fertilizer to provide a long-lasting effect throughout the fall months.
  • As temperatures cool, turfgrass requires minimal irrigation each week. Click here for irrigation needs in your area.
  • Plant new lawns or repair insect/diseased areas with grass seed, allowing 4-6 weeks for establishment before heavy frosts.
  • In compacted sites, aerate with hollow core aerator when turfgrass is actively growing in September and October.

Pests and Problems

  • To control raspberry crown borer, use a root drench during late summer to early fall. Click here for more information.
  • Learn about what causes bitter pit and other problems in apples.
  • Control rust mites in apple and pear trees after fruit is harvested and before leaf drop. Click here for information.
  • Box Elder bugs congregate on sunny surfaces during the fall months. Click here to learn about controlling these nuisance pests.
  • Monitor for damaging turfgrass insects.

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