Peach

A peach tree is not a lifetime investment. Most cultivars give good fruit for twelve to fifteen years, then decline from borers, canker, or sheer exhaustion. If you plant a peach expecting it to outlive you the way an apple might, you'll be disappointed. What you get instead is a tree that bears heavily, ripens fast, and asks to be replaced while you're still young enough to dig another hole.

Chill hours are the first real barrier. Most peach varieties need between 750 and 950 hours below 45 degrees to break dormancy properly; without that accumulated cold, the tree may leaf out unevenly or fail to set fruit. If you're in zone 8b or warmer, you need a low-chill variety bred for mild winters — planting a standard Redhaven in central Florida is a way to own an ornamental tree that never fruits. In zones 5 and 6, the opposite problem is more common: the tree gets its chill hours, blooms early, and a late-March frost kills every flower bud.

The diseases are worse than the climate. Peach leaf curl shows up in early spring as puckered, reddish leaves that eventually fall off; a severe infection can defoliate the tree by May and weaken it for the rest of the season. The only effective treatment is preventive: a dormant copper spray applied in late fall after all the leaves drop, and again in late winter before the buds swell. Miss that window and you're likely to lose the year. Brown rot is the other persistent threat — a fungal infection that turns ripening fruit into mummified husks overnight, especially in a wet spring. Infected fruit left on the tree or on the ground overwinters the spores, so sanitation matters as much as spray.

Peaches are self-fruitful, which removes one complication. You don't need a second tree for pollination. But the crop load on a healthy tree can be overwhelming — a young peach in its third year may set three hundred fruits, and if you let them all ripen, you'll get three hundred marble-sized peaches and a tree with broken branches. Thinning to one fruit every six inches along the branch is the move that separates a mediocre harvest from a good one. It feels brutal, but the remaining fruit will size up properly and taste like what a peach is supposed to taste like.

The trunk is vulnerable to borers — larvae that tunnel into the cambium layer and can girdle a tree in a season or two. You'll see gummy sap oozing near the base, sometimes mixed with sawdust-like frass. Catching it early and digging out the borer with a knife can save the tree; missing it for a year usually doesn't. White latex paint on the trunk in spring is an old preventive measure that still works — the borers prefer dark bark.

In the fall, after harvest, prune out any dead or diseased wood and rake up every fallen leaf and mummified fruit. Peach leaf curl and brown rot both overwinter in debris, and a clean orchard floor in November is worth more than any spray you'll apply the following spring.