Popcorn

Popcorn is a crop that most home gardeners get wrong the first time. The mistake is almost always the same: they harvest the ears when they look ripe — the husks have dried, the kernels are hard — and then try to pop them immediately. The result is a few half-hearted puffs and a bowl of chewy, rubbery kernels that taste like regret. A popcorn ear needs to dry on the stalk until the kernels dent deeply when pressed with a thumbnail, and even then it needs weeks more curing in a dry, ventilated space before the moisture content is low enough to produce the crisp, fluffy pop you're expecting.

The other non-negotiable is isolation from other corn. Popcorn that cross-pollinates with sweet corn or field corn produces ears with mixed kernels — some that pop, some that don't — and the eating quality of both crops suffers. If you're growing any other type of corn in the garden, you need at least four hundred feet of distance between plantings, or you need to stagger the sowing dates by at least two weeks so that the tassels aren't shedding pollen at the same time. Most home gardens can't manage four hundred feet; the timing offset is the practical solution.

Plant in blocks, not rows. Corn is wind-pollinated, and a single row or a double row tends to produce poorly filled ears because the tassels can't catch enough pollen. A block of at least four rows, even if each row is short, gives much better pollination. Space plants about twelve inches apart within the row, and water consistently during the two-week period when the tassels are shedding and the silks are receptive — a dry spell during pollination is what causes the gaps and missing kernels you sometimes see on an ear.

Harvest timing is where most gardeners lose the crop. Wait until the husks have turned brown and papery and the stalks themselves are starting to die back. Peel back a husk and press a kernel with your thumbnail — if it dents and leaves a mark but doesn't leak milky liquid, the ear is ready to pick. Bring the ears inside, peel back the husks but leave them attached, and hang the ears in a warm, dry place with good airflow. A garage, an attic, or a covered porch works. They need at least three weeks, often longer, before the kernels are dry enough to shell and store.

To test if the corn is ready to pop, shell a few kernels from one ear and try them. If they pop into full, fluffy pieces, the batch is ready; if they're chewy or only partially popped, give the ears another week or two of curing. Once the corn is fully cured, store it in airtight jars in a cool, dry place — it will keep for years.