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CAPSICUM annuum 'Yolo Wonder'

Image of Capsicum annuum 'Yolo Wonder' (Grossum Group)



Botanical Name

CAPSICUM annuum 'Yolo Wonder'( Grossum Group)

Plant Common Name

Bell Pepper, Yolo Wonder Pepper

General Description

The green to red pepper, 'Yolo Wonder', is a prolific sweet bell pepper with improved resistance to tomato mosaic virus. Its medium-size, blocky fruits are harvestable when green about 72 to 75 days after planting robust seedlings and turn glossy bright red a couple weeks later. The fruit walls are thick, crisp and sweet and perfect for fresh eating and cooking.

Native to tropical America, these annuals had been grown and selected by Native Americans since pre-history times. In fact, their specific region of origin is still unknown due to distribution by man. Peppers became available to Europeans when the new and old worlds connected. Since then, many unique selections have been developed in Europe—particularly in warm Mediterranean countries like Spain, Italy and Greece where they grow well.

Peppers are bushy plants with rigid, brittle stems and thin, often broad, dark green leaves. Their flowers are inconspicuous, five-petaled and white. Peppers have firm, fleshy, hollow fruits that may be harvested green or allowed to mature to red, orange, yellow, purple-brown, or near ivory, depending on the selection. On the interior they are lined with spongy ribbing which supports many small, flattened, rounded seeds. Bell peppers are all members of the Grossum groups, due to their large size and distinctive shape.

Green fruits have a sharper taste and mature are sweeter, but the heat of a pepper is what most are interested in. Many peppers are spicy hot. Their heat is produced by a chemical called capsaicin measured in units called Scoville units against the Scoville scale ( The purer the capsaicin, the hotter the pepper and the higher the Scoville rating. Pepper seeds carry more heat than the flesh of the fruit. Still, bell peppers have the lowest heat of all and are almost never spicy.

Bell peppers are warm season vegetables that are easy to grow, if you can provide them with the correct conditions. Full sun, warmth, fertile, perfectly drained soil and regular feeding are required for good growth and fruit production. Peppers generally take 60 to 90 days to harvest. Some vascular wilts and fungal problems can befall them, but overall they are not needy. Proper spacing will keep diseases at bay and help with fruit production, so plant according to the grower’s guidelines.

Start pepper seeds indoors six to eight weeks before the last spring frost date and transplant outdoors later. Abundant flowering and fruiting occur from late spring into fall (until the killing frost) in areas with cold winters, and year round where winters are warm and frost-free. Peppers can be ornamental as well as tasty, so enjoy them as bedding or container plants as well as vegetable garden standbys.


  • AHS Heat Zone

    12 - 1

  • Sunset Zone

    A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type


  • Sun Exposure

    Full Sun

  • Height

    24"-36" / 61.0cm - 91.4cm

  • Width

    18"-26" / 45.7cm - 66.0cm

  • Bloom Time


  • Native To

    Hybrid Origin, Mexico, Central America, South America

Growing Conditions

  • Soil pH


  • Soil Drainage

    Well Drained

  • Soil type


  • Growth Rate


  • Water Requirements

    Average Water

  • Habit


  • Seasonal Interest

    Spring, Summer, Fall

Ornamental Features

  • Flower Interest


  • Flower Color


  • Fruit Color

    Red, Green

  • Foliage Color (Spring)

    Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green, Black

  • Foliage Color (Winter)

    Dark Green

  • Fragrant Flowers


  • Fragrant Fruit


  • Fragrant Foliage


  • Bark or Stem Fragrant


  • Flower Petal Number


  • Repeat Bloomer


  • Showy Fruit


  • Edible Fruit


  • Showy Foliage


  • Foliage Texture


  • Foliage Sheen


  • Evergreen


  • Showy Bark


Special Characteristics

  • Usage

    Container, Edible, Herb / Vegetable, Tropical

  • Sharp or Has Thorns


  • Invasive


  • Self-Sowing