Last Frost: When Is It Time To Plant A Garden In Mendham Twp.?

MENDHAM TOWNSHIP, NJ — Inflation, the rising cost of food, and the nutritional benefits of homegrown produce have cultivated a new crop of home gardeners around Mendham Township.

Whether you're a first-time or experienced gardener, one of the most important dates you need to know as you think about your garden this spring is:

When does the danger of frost pass in Mendham? It’s May 5, according to The Old Farmer’s Almanac, which offers a ZIP code tool to help gardeners figure out when to plant what. The almanac's nearest information station is at Somerville, New Jersey.

The growing season is 155 days long around Mendham Township. Looking ahead to fall, the first frost usually occurs around Oct. 8.

According to the publication, there’s a 30 percent probability of a frost occurring after May 5, as the date is determined using National Oceanic and Atmospheric historical data from 1981-2010, and is not "set in stone," The Old Farmer’s Almanac said. After all, it's the weather.

May 5 represents the average date of the final "light freeze," which occurs when the temperature dips between 29 and 32 degrees Fahrenheit. At that temperature, tender plants can be killed.

A "moderate freeze," between 25 and 28 degrees, is destructive to most plants; and a "severe freeze," at anything under 24 degrees, can do heavy damage to most garden plants, according to the almanac.

As the pandemic’s third gardening season gets underway around the Mendhams, The Old Farmer's Almanac has another tool to help gardeners decide when to plant which crops.

In Mendham Township, it’s usually best to start planting corn between May 5 and May 19, potatoes between April 28 and May 19. Spinach can be planted between March 24 and April 14.

Onions and parsley can be planted April 7-21 and carrot seeds can go in the ground between March 31-April 14. Hold off on planting green beans until May 12-June 2. The almanac recommends starting tomatoes, watermelons, and zucchini indoors.

Even before the pandemic, mental health experts pointed to gardening as a way to deal with stress.

Gardening provides physical exercise and promotes healthier eating, but it can also reduce worry among people who consider themselves perfectionists, psychologist Seth Gillihan said.

"Given the lack of control we have, gardening can be a good antidote for perfectionism," Gillihan wrote in a 2019 Psychology Today blog. "No matter how carefully you plan and execute your garden, there are countless factors you can't predict — invasions by bugs, inclement weather, hungry rodents."

With so many things out of their control, perfectionism is a waste of time, he said, so gardeners may ask themselves "why bother" trying to be perfect?

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