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What to Do This Month - September
September is the month where Tucson's gardeners get the urge to start their engines and speed off into the coming planting season. The anticipation of cooler temperatures and the fall weather ahead means new plants in the nurseries and garden centers, less watering, and a desire to spend more time in the garden.  The hope is there, but more times than naught, summer temperatures hang on a bit longer than desired. The monsoon humidity retreats and the nights cool off to give the gardener pleasant mornings for garden activities.

Unfortunately some of the plant sellers are anxious to capitalize on the renewed interest in gardening and may jump the gun by offering bedding plants that will struggle to survive if the temperatures creep above normal. The plants suffer from the heat and may get a bit scorched and then have trouble regaining their healthy appearance. Often it's better to curb one's enthusiasm when the first plants arrive in the garden centers. There will be plenty of plants available late in the month and certainly into October and November. Tucson's winter annuals like cooler temperatures.

Here are a few suggestions for September gardening:

Will it or won't it? You'll have to watch the local weather predictions and judge whether September will be a normal one with gradual cooling all month or one of those September's that doesn't want to let go of the summer heat.  Will you plant everything you can get your hands on, or will you hold back till October where cooler temperatures prevail?

The avid vegetable gardener still has warm season crops in the garden including a new crop of beans, lingering eggplants, winter and summer squash, and hope for another tomato crop. Cool weather crops like broccoli, leaf lettuce, Swiss chard, onions, garlic, radishes, and peas need to be planted whether from seed or transplants from the nursery.

Cool temperature loving herbs like dill, cilantro, parsley and chives can be planted in containers or the herb or vegetable garden.

Trees and shrubs, including citrus, can be planted providing adequate moisture is supplied to help get the plants' roots thoroughly established before winter sets in and slows down growth.

You'll like the weather, so will another wave of insects that'll take the opportunity to feast on new growth. Leaf cutting ants will continue to strip the foliage from plants as they harvest vegetation during the night and into early morning.

Start watching the local newspapers for announcements of fall plant sales at Desert Survivors Nursery, Tohono Chul Park, and the Tucson Botanical Gardens for late September or early October.

Why wait? If you know you're going to do some major container planting or soil amending start stocking up on potting soil, composted steer manure, and other soil amendments. A bag or two at a time is a lot easier to handle. Stock up gradually so you have what you need when you need it.

Prepare flower and vegetable beds by adding plenty of compost or steer manure and get it well worked into the soil before it's time to plant.

Remember last July and August? Were the monsoons stingy or generous with moisture?  Will drought conditions continue until communities require mandatory water conservation? It's never too late to start transforming a thirsty water consuming oasis into a more water conserving environment. Think native plants with an eye catching collection of cactus and succulents.

Drip, drip, drip. Don't waste water in your garden now and in the future. Install and properly use an efficient drip irrigation system.

Find collections of southwest wildflower seed to plant in your desert garden in late September and October so you'll have a spring show of penstemon, blue bells, desert marigold, brittlebush, and California poppies.


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