California Wonder Sweet Pepper. This prolific variety produces thick-walled, bell-shaped, red and green peppers with a mild and sweet flavour. Perfect for salads, frying, or stuffing. Sow seeds between February and April for a July to October harvest. Pepper (Sweet) - California Wonder This is an attractive and prolific variety which produces thickwalled, red and green bell-shaped peppers with a... An attractive and prolific variety, this Pack of California Wonder Sweet Pepper Seeds produces thick walled, red and green 'bell-shaped' peppers with a mild and sweet flavour. Ideal for salads, frying or stuffing, simply plant between February and April for harvest in July through October.