Giant California Wonder

Family: Solanaceae Sweet Pepper

Planting Schedule

Provide your location or planting zone to unlock dates and add Giant California Wonder to a garden.

Sink your senses into Giant California Wonder’s glossy, thick-walled bell peppers, where crisp green turns to a rich, warm red as the fruit swells to impressive size.

The flesh is satisfyingly firm with a sweet, mild snap, making these peppers a standout for fresh slicing, roasting, and vibrant sauces that showcase their full-bodied flavor. Grow one plant and enjoy a steady harvest of showy, garden-ready bells that look as good as they taste.

Light: Full SunMaturity: 75 DaysHabit: Bush

Botanical illustration of Giant California Wonder

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Giant California Wonder Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Mar 30th	Jul 20th	Oct 3rd – Aug 29th
Zone 2b	Mar 20th	Jul 10th	Sep 23rd – Aug 25th
Zone 3a	Mar 20th	Jul 10th	Sep 23rd – Sep 1st
Zone 3b	Mar 24th	Jul 14th	Sep 27th – Sep 21st
Zone 4a	Mar 20th	Jul 10th	Sep 23rd – Sep 24th
Zone 4b	Mar 18th	Jul 8th	Sep 21st – Sep 27th
Zone 5a	Mar 13th	Jul 3rd	Sep 16th – Sep 30th
Zone 5b	Mar 9th	Jun 29th	Sep 12th – Oct 5th
Zone 6a	Mar 6th	Jun 26th	Sep 9th – Oct 10th
Zone 6b	Feb 28th	Jun 20th	Sep 3rd – Oct 16th
Zone 7a	Feb 23rd	Jun 15th	Aug 29th – Oct 20th
Zone 7b	Feb 13th	Jun 5th	Aug 19th – Oct 28th
Zone 8a	Feb 4th	May 27th	Aug 10th – Nov 5th
Zone 8b	Jan 26th	May 18th	Aug 1st – Nov 12th
Zone 9a	Jan 9th	May 1st	Jul 15th – Nov 26th
Zone 9b	Dec 15th	Apr 6th	Jun 20th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	Continuous Production

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Bush
Support Needed	Stake
Planting Depth	Normal
Germination Temp (°F)	80
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Culinary Notes

Chef's Note

Giant California Wonder’s thick walls give you that rare sweet bell pepper bite—crisp enough for raw slices, but substantial enough to roast without turning watery. It’s a workhorse for charred sheet-pan peppers and for sauces where you want pepper flavor and structure, not just color.

Best Uses

thick slicing for salads and sandwiches where the pepper won’t collapse
roasting (whole or in broad slabs) to coax out caramel-sweet char notes
quick skillet sauté for fajita-style strips that stay toothsome
blending into a silky, body-giving pepper sauce or relish

Flavor Profile

sweet, mild pepper flavor crisp snap with thick, meaty walls slow-blooming roasted sweetness clean, grassy finish when green

Kitchen Pairings

lime garlic olive oil chicken cheddar smoked paprika

Frequently Asked Questions

What pests or diseases commonly affect Capsicum annuum (Giant California Wonder) and what can I do?

Watch for aphids and hornworms, which can quickly defoliate and damage developing peppers; control aphids with a strong water spray and use hand-removal for hornworms when you spot them. Also monitor for blossom-end rot and leaf spotting—blossom-end rot is driven by irregular watering, so keep soil moisture steady and avoid letting plants dry out between waterings.

How often should I water Giant California Wonder peppers during the main growing phase?

During fruiting, water deeply enough to moisten the root zone, typically about 1–2 times per week depending on heat, aiming for evenly moist (not soggy) soil. Let the top 1 inch of soil dry slightly between waterings, since water stress can trigger blossom-end rot while consistently wet soil encourages root problems.

How do I know when Giant California Wonder (Capsicum annuum) is ready to harvest?

Harvest at about 75 days when the peppers are full-sized and firm, with a glossy appearance and walls that feel substantial. For the classic mature stage, pick when the fruit turns its final color (often green turning to red), since leaving them on too long can reduce firmness and delay new fruit set.