Tomatoes are arguably the most popular vegetable garden plant.   In addition to bearing fruit, they also produce tons of questions each season.  In an effort to help our tomato gardeners, here is a list of suggestions for growing tomatoes along the front-range of Colorado.

• Always harden off greenhouse plants for 7 to 10 days by placing them in a spot protected from the wind and sun several hours a day, gradually increasing the time exposed to sunlight, wind and nighttime temperatures.

• Choose your sunniest spot—up against a wall is great for heat retention when planting tomatoes.

• Dig lots of composted organic material into the soil.

• Preheat the ground with Walls o” Water or black plastic.

• Transplant at the right time!! Though tomatoes can survive temperatures in the 30s, they will not grow well until the nights are above 50 degrees. (Our average last frost day is May 15th, but use common sense when planting tender crops.)

• When transplanting, dig a shallow trench (rather than a deep hole) and lay the plant on its side. Fill in the trench and bend the top upward, leaving just the top third or less of the plant above ground. The plant is better able to get water and nutrients with this method.

• Water regularly to keep the roots from drying out, but don’t over water.

• Longer season tomato varieties tend to be meaty and large; early season are usually smaller and juicier.

• For container-grown tomato plants, choose a determinate variety. It will stay more compact, producing its fruit all at one time.

• Experiment with new varieties—you may find one you like better than your old standby.

• Use tomato cages or stakes on indeterminate varieties to keep the fruit off the ground and help prevent rotting

• Always rotate tomato plants in your garden from year to year to discourage disease and pests.

• Extend your season in the fall by covering plants with freeze cloth. You may get up to another month of harvest in the plants weather the first cold snap—or else you just might have to try some fried green tomatoes! 

For any questions you have on this article, or any topic of concern, email us—or better yet, come by and talk to one of our professional staff members.  Remember, Phelan Gardens is open year-round!   

For additional information, check the following links:  

• Tomatoes for the Home Garden
• Recognizing Tomato Problems
• Plan Now for a Bumper Crop of Healthy Tomatoes