|'Pennsylvania Butter-Flavored Popcorn' is an heirloom variety which, when popped, tasted as though it has been buttered, a nice feature to reduce the fat content in popcorn. The plants grow 8 feet tall, with two ears which measure 4 to 6 inches, tapering from 1.5 inches at the base to 1 inch at the tip. Each ear contains 26 to 28 rows of white kernals, which are mature 120 days after sowing. Very productive plant. Originally domesticated by Mesoamericans, it is a staple food with many other traditional uses. Home gardeners love to grow corn, and there are many varieties suited to different climates. Plant seeds 1 inch deep in rows or clumps, two weeks after the last frost date. Corn needs rich soil, full sun and adequate moisture to produce good ears. It is wind pollinated, so if you want to save seed, you will need to either stagger the planting time of different varieties, or plant them 1/4 mile apart. Water deeply.