September

The weather is cooling down, but the monsoon is finished, water needs are still high. Planting is not as hard on the plants if you wait until the night temperature falls in the 70′s to do your plantings.

Annuals and perennials to sow:
African Daisies, Alyssum, Aster, Bachelor Button, Bells of Ireland, Calendula, California Poppy, Candytuft, Carnation, Clarkia, Columbine, Delphinium, Forget-Me-Not, Gaillardia, Godetia, Gypsophila, Hollyhocks, Larkspur, Lupines, Nasturnium, Nicotiana, Pansy, Petunia, Phlox, Pinks, Poppy, Salpiglossis, Scabiosa, Shasta Daisy, Snapdragon, Stocks, Sweet Peas, Sweet Sultan, Sweet William, Verbena, Viola

In the vegetable garden
– Plant beets, broccoli, cabbage, carrots, cauliflower, celery, eggplant, garlic, lettuce, peas, radishes.

Your lawn:
It is time to decide if you are going to overseed your lawn with winter grass.  If you are not, high nitrogen fertilizer will keep it green longer.

October

The weather is cooling down, that’s now that you want to plant citrus, but also your winter bloom and vegetable.
– A great month to do your planting, the nurseries are loaded with container grown plants.
– It is also the right time to divide perennials
– Time to sow wild flowers.
– Plant impatiens in shady, frost protected area of the garden

What to sow:
African Daisies, Alyssum, Aster, Bachelor Button, Bells of Ireland, Calendula, California Poppy, Candytuft, Carnation, Clarkia, Delphinium, Forget-Me-Not, Gaillardia, Godetia, Gypsophila,Hollyhocks, Larkspur, Lupines, Nasturnium, Nicotiana, Pansy, Petunia, Phlox, Pinks, Poppy, Salpiglossis, Scabiosa, Shasta Daisy, Snapdragon, Sweet Peas, Sweet Sultan, Sweet William, Verbena, Viola

Bulbs:
You can plant bulbs that have low chilling requirements (they don’t need a cold period before starting to grow):
Amaryllis, Anemone, Calla, Daffodil, Iris, Muscari, Oxalis, Ranunculus, Sparaxis (harlequin flower), Watsonia
Put bulbs that need chilling in your fridge for 6 to 8 weeks:
Crocus, Hyacinth, Tulip

In the vegetable garden
– Plant artichokes, beets, broccoli, cabbage, carrots, cauliflower, celery, garlic, lettuce, peas, radishes.

Your lawn:
The nights are getting cool enough, it is time to sow winter grass.  If you don’t do it, fertilize again your bermuda, to keep it green as long as possible.

By: http://www.gardeninginarizona.com