King of the North Sweet Pepper is an heirloom Capsicum annuum that earned its name by thriving in the cool summers of New England and beyond. This early-maturing variety produces good-sized crisp bell peppers that transition from green to deep red, delivering abundant harvests right up until frost. With a 65 to 75 day maturity window and a knack for performing in cooler climates where many peppers struggle, it's a reliable choice for gardeners in northern regions who refuse to compromise on pepper production.
Full Sun
Moderate
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Moderate
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The real gift of King of the North is its ability to set and ripen fruit in cooler weather, a trait rarely found in sweet peppers. Most varieties falter when temperatures dip below ideal, but this heirloom keeps producing through the shoulder seasons, giving northern gardeners months of harvest instead of weeks. The plants demonstrate a heavy yielding habit, meaning a single plant rewards you generously rather than offering a sparse trickle of peppers.
These peppers are used fresh in salads, sliced raw for snacking, or cooked in stir-fries and sautés. The thick-walled, crisp texture makes them excellent for stuffing whole, and home gardeners often preserve them by roasting, freezing, or drying. The transition from green to red ripeness gives cooks flexibility to harvest at either stage depending on desired sweetness and texture.
No timeline data available yet for this variety.
Sow seeds indoors 6 to 8 weeks before your last spring frost date. Plant seeds 1/4 inch deep in warm soil and maintain temperatures between 70 and 85°F for germination. Expect seedlings to emerge in 7 to 14 days. Keep seedlings under bright light and maintain consistent moisture until they develop their first true leaves.
Harden off seedlings gradually over 7 to 10 days by exposing them to outdoor conditions in increasing increments. Transplant outdoors after the last frost date and once nighttime temperatures reliably stay above 60°F. Space plants 18 to 24 inches apart in full sun and plant at the same depth they were growing in their containers.
King of the North peppers can be harvested at the green stage, but they develop fuller flavor and sweetness once they mature to red. Begin picking when peppers reach full size and feel firm; leaving mature peppers on the plant signals to the plant to slow production, so regular harvesting encourages continued flowering. The variety's defining strength is its ability to ripen fruit all the way until frost, so continue harvesting even as temperatures cool in fall. Cut peppers from the plant with a knife or pruners rather than pulling, which can damage branches.
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“King of the North arrived in seed catalogs as a response to the simple truth that most sweet peppers won't grow reliably in northern climates. Unlike peppers bred for warm-weather regions, this heirloom was selected and preserved precisely because it thrives in New England's cooler summers. Gardeners in the North kept this variety alive by recognizing it as uniquely suited to their conditions, saving seed and passing plants forward as a practical solution to their regional challenge. The name itself reflects this legacy; a king rules its domain, and King of the North rules the limited growing seasons where other peppers fail.”