• Large Keystone Giant Pepper from Hudson Valley Seed Co., green vegetable with a glossy surface and robust shape.
  • Bright green Keystone Giant Pepper from Hudson Valley Seed Co. shown on a white background, highlighting its large, smooth vegetable shape.
  • Large Keystone Giant Pepper from Hudson Valley Seed Co., vibrant green vegetable with a glossy skin and sturdy stem.
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Hudson Valley Seed Co.

Keystone Giant Pepper

Capsicum annuum

Conventionally Grown

A reliable heirloom that yields massive, thick-walled, sweet bell peppers.

This is a classic, dependable heirloom for any gardener who dreams of growing truly massive, softball-sized bell peppers. The 'Keystone Giant' lives up to its name, forming a sturdy, stress-tolerant plant that is widely adaptable to a variety of climates. Developed from 'California Wonder' for even greater size, it has been a garden favorite for years. It's also notably resilient, offering good resistance to mosaic virus, which makes it a truly reliable performer for home gardeners.

The reward for its steady growth is a generous harvest of impressive, four-lobed, blocky peppers. The fruits are prized for their incredibly thick, sweet, and juicy walls. While delicious when picked green, they mature to a brilliant scarlet red with one of the sweetest flavors available. This pepper's huge size and sturdy walls make it the absolute ideal choice for stuffing, and it's just as wonderful for grilling or slicing fresh into salads.

Unit Price Quantity Availability
25 Seeds $5.39
Out of Stock
75 Seeds $8.99
In Stock
225 Seeds $13.79
In Stock

Price as selected: $0.00

Ships within 2-3 business days

Growing instructions
Sow indoors 6-10 weeks before last frost. Requires heat for germination; can take 10-14 days. Grow seedlings in a warm, well-lit environment; supplemental light usually required. Transplant 3 weeks after last frost in full sun.
Product Details
Days to Maturity 75 days from transplant
Days to Germination 7-14 days
Width at Maturity 18"
Height at Maturity 24"
Hardiness Zone Range Annual 4 5 6 7 8
Sun Conditions Full Sun (8+ Hours Sun)
Planting Depth ¼"
Row Spacing 36"
Plant Spacing 18"
  • Hurry, only 1 item left in stock!
Large Keystone Giant Pepper from Hudson Valley Seed Co., green vegetable with a glossy surface and robust shape.
Bright green Keystone Giant Pepper from Hudson Valley Seed Co. shown on a white background, highlighting its large, smooth vegetable shape.
Large Keystone Giant Pepper from Hudson Valley Seed Co., vibrant green vegetable with a glossy skin and sturdy stem.
  • 5 stars: 1 (20%)
  • 4 stars: 0 (0%)
  • 3 stars: 3 (60%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (20%)
D
David G.
Good germination, late harvest

Good germination, but very late to fruit. Just picked a bunch of green ones before the first frost.

D
Donna M.
The plants were abysmal

The plants were abysmal. The pepper - maybe 12” high & 2 peppers. Zucchini - 1; broccoli (2) & cauliflower (2) - 0; celery (2) - 2 stalks that were edible; Brussels sprouts (2) - a couple of little buds, dried up & shriveled. Now I’ve grown my garden so well that I was giving veg away to everyone, with minimal plants/harvest. It’s not my garden, was not the heat or lack of rain, just very bad quality seedlings. First & last time I will order from you. Home Depot seedlings much better quality!

Hi Donna, We are so sorry to hear that you had issues with both the seeds you purchased (Keystone Giant) and some of the seedlings you purchased with us as well. I am delighted to hear that your pepper plants did indeed produce for you, as May is quite late in our growing zone to be sowing Pepper Seeds. It is recommended to sow peppers indoors 6-10 weeks before the last frost date. I would imagine the late start date may be part of the short stature and low yield of those plants. Feel free to reach out with any questions. Our customer service team is always available for troubleshooting.

A
Anonymous
Not red, but yellow

Some of the peppers turned yellow instead of red.