August Lawn & Garden To-Do List

Annuals and Perennials

  • Spring and summer-flowering perennials can be divided and transplanted after blooming. In zones 5 and warmer: divide overgrown plants and discard the extra, or transplant during the coolest part of the day and preferably in the shade.
  • Trim and fertilize your containers – they still have time for another show.
  • Deal with late-season pests – such as aphids, whiteflies, and spider mites – with a spray of water from the hose.
  • Treat diseased plants, and remove diseased foliage before leaves drop.
  • Prune back vigorous climbers such as wisteria, and train them around trellises while the growth is soft.
  • Propagate plants by collecting seeds, taking cuttings, or layering.
  • Continue deadheading! For prolific bloomers like coreopsis and catmint, shear them lightly to encourage more blooms.
  • Label your plants with garden stakes, particularly perennials that die down to the ground in the fall.
  • In colder zones 1-3, begin moving your houseplants indoors to acclimate them.


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10 COMMENTS

  1. Your tips are a home run, not a pun because it is baseball season. August can be a long hot month and it is difficult to work in the heat or plan for next spring. But you can’t slack if you are a garden nut like me.

  2. I’m in Texas and usualy that is not a bad deal but this year we have had no Rain. Everything is dead. Even the weeds are dying. The thought of a flower garden is wonderful but the Pain of keeping it alive is a very hard thing to imagine. Have you got some Ideas for the poor Texans. Sincerely, Mary Parker

  3. I have a large yard with a good deal of perennials. My problem is most of my plants this year and some of last year are dying from the ground up. The flowers on the top survive on my mums, but my phlox look awful and I keep getting the powdery substance on them. The phlox are near my deck, but the other ones are near my fence. Usually my yard looks great, this year has been a struggle. I even had trouble with my hangers. I found green and red worms eating them and I used sevin to try to rid them, but it did not work.
    Any ideas for Massachusettss bugs?

  4. I have good solid wood windows, want to put storm windows on the outside of them. I need to reglaze and paint them before installing. Do you think this is a good idea or should I replace the windows instead? I am almost sure the storm windows will have to be ordered, in 1957 when they were installed they were standard windows for the time and area. If I have measured right they will be 36″ X 56″ on the outside. Thank you for any advice given!

  5. My problem is that I have these holly sapling growing within my lawn from the roots of my neighbor former holly. I pull up roots that they are growing from but more keep growing. Yes I have hedges of a different style that are space and I would like to put root killer to kill the holly but is afraid that it might spread to my hedges. How can I get rid of this holly that is spreading into my lawn and garden area without destroying my future planting space. Need Help.

    • Hi, Linda,
      Congratulations on the move! The list should apply nationwide unless otherwise noted.
      For instance, you’ll see notes such as “In zone 8,” and that tip would apply to a certain area. We do recommend checking each month’s full article (in addition to the checklist) for in-depth gardening information, which can include geographic limitations.

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