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What to Do This Month - May
M
ay convinces Tucson's gardeners spring has been and summer is on its way. If you have plans for last minute gardening then you'd better get it done early in the month and fairly early in the morning. Temperatures will climb and it's up, up and away until the first 100 degree temperature is reached. After that, gardening becomes more of a survival mode until July monsoons thunder their way into town.

You'll have to start adjusting to Tucson's weather ahead. That means changing your watering schedule, mowing lawns if you have them, pruning back new growth, keeping an eye on summer vegetables and harvesting when ready. You'll find plenty of bugs in the garden, too. Good ones, and bad ones.  

If you're acquainted with Tucson's summer gardening then you know what to expect and you've already put many of your bedding plants in the compost bin and started to get up earlier in the morning to get that watering done. If you're new to Tucson's summer then you're in for a few surprises and probably an incredibly high water bill. The term wilted takes on new meaning as both plants and gardeners greet the noonday sun.  Two key words for May and June are "morning" and "evening".  Get your gardening done then and enjoy those hours in your garden as best you can.  One final word: shade - you, and many of your plants, may need it to survive the Tucson summer.

Here are a few suggestions for May gardening:

Summer's here, dress accordingly by wearing plenty of sunscreen and a big shade providing hat while gardening. And don't forget to drink plenty of fluids. Protect your eyes from the harsh sun with a good pair of sunglasses. Don't overdo, gardening is supposed to be enjoyable not taxing.

Hot temperatures and drying winds means more watering. You've still got time to empty small pots or place quick drying clay pots inside larger plastic or glazed containers to offer them some insulation against the summer heat.  Watch for signs of plant stress - curled leaves, drooping branches, that wilted look. Water deeply, don't just wet the soil surface. Get down to the plant's roots.

I just can't say this too much, mulch.  Put a layer of some kind of mulch around your plants to conserve moisture and help cool the soil. Straw, wood chips, rock or compost will work.

The second of three yearly citrus fertilizing is due this month. It's a general rule, not a must do. Over fertilizing can make for thick skins on your fruit. More important will be to make sure your citrus get enough moisture according to the tree size and soil conditions. Again, when you do water, water deeply and not just the roots near the surface.

If you planted summer squash in mid March it should be coming into production. If your plants don't seem to be producing enough on their own you can help them along by pollinating the female flowers with pollen on a small paint brush taken from a male squash blossom. It needs to be done first thing in the morning while the blossoms are still open and the pollen viable. Do it daily and you'll be ready to toss your plants in the compost bin by June because you'll have grown tired of harvesting and eating squash.

Watch your tomato plants closely. When the fruit starts to show signs of ripening, birds and rodents will be quick to spot it. Sometimes you have to pick early and let the fruit ripen on the kitchen counter. They'll still have the home grown flavor you're looking for when they do ripen. Water regularly to make sure your plants don't totally dry out or you'll start to get signs of blossom-end rot on the tomatoes. Constant bursts of moisture may cause cracking of the fruit where their are splits allowing fungus to enter. Some cultivars are more susceptible to cracking than others.

You can still plant summer annuals such as zinnias, portulaca, purslane, and periwinkle that you'll find in the nurseries and garden centers. They'll tolerate the heat but they'll still need regular watering.

It's not to late to plant some vegetables and herbs but keep in mind they'll take water. How many eggplant can your family eat? All kinds of hot peppers can be transplanted into the garden but how many of those spicy delights do you really use in your cooking? They may need added shade to keep the developing fruit from getting sunburned if there isn't a large canopy of plant leaves.

You can still plant some trees and shrubs but they will take nurturing to make sure they don't get stressed from lack of moisture or you can wait till fall and cooler temperatures and a better chance of plant survival. Plants that don't mind May's warm temperature and actually thrive are cactus. Maybe it's time to add a few more to your landscape this month.

Summer's here. It's tough on plants, people and animals. Garden wisely so you and your plants can make it till July and higher humidity and hopefully some much needed rain.


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