Capsicum Yolo Wonder Vegetable Seeds
Grow classic, thick-walled Yolo Wonder capsicums at home for salads, stuffing, roasting, grilling and everyday cooking. Yolo Wonder Capsicum (Capsicum annuum) is an open-pollinated sweet bell pepper variety producing blocky, thick-fleshed fruit that develops dark green before ripening to red.
The fruit is typically three to four lobed with crisp, fleshy walls and a sweet, mild flavour without chilli heat. Yolo Wonder can be harvested green for the familiar flavour and texture of a green capsicum or left on the plant to fully ripen to red for a sweeter, more mature flavour.
Yolo Wonder develops relatively compact plants with dense foliage that helps provide cover for developing fruit. Well suited to Australia’s warm growing conditions, it can be grown in vegetable gardens, raised beds and sufficiently large containers.
Yolo Wonder Capsicum Seed Details
| Botanical name | Capsicum annuum |
|---|---|
| Variety | Yolo Wonder |
| Seed type | Open-pollinated |
| Plant type | Warm-season, frost-tender sweet capsicum |
| Plant height | Approximately 60 cm |
| Fruit colour | Dark green, ripening to red |
| Fruit shape | Blocky bell capsicum, generally 3–4 lobed |
| Fruit size | Approximately 10 cm, depending on growing conditions |
| Flavour | Sweet and mild |
| Position | Full sun |
| Sowing depth | Approximately 5–6 mm |
| Germination | Approximately 7–21 days in warm conditions |
| Plant spacing | Approximately 50–60 cm |
| Harvest | Approximately 70–90 days, depending on growing conditions and harvest stage |
Why Grow Yolo Wonder Capsicum?
- Produces classic blocky, thick-walled bell capsicums.
- Sweet, mild fruit with no chilli heat.
- Fruit can be harvested dark green or allowed to fully ripen to red.
- Excellent for salads, stuffing, roasting, grilling and everyday cooking.
- Dense foliage provides useful cover for developing fruit.
- Open-pollinated variety with a long history of cultivation.
- Suitable for vegetable gardens, raised beds and large containers.
- Regular harvesting of mature fruit can help maintain production while growing conditions remain favourable.
How to Grow Yolo Wonder Capsicum from Seed
Yolo Wonder is a warm-season capsicum that performs best with plenty of sunlight, warmth and a sufficiently long growing season. Seeds germinate most reliably under warm conditions, so gardeners in cooler regions can start plants indoors before outdoor temperatures are suitable.
- Choose a warm, sunny position.
Select a location receiving full sun. Capsicums require warmth and good light for strong growth, flowering and fruit development. - Prepare fertile, free-draining soil.
Yolo Wonder performs best in fertile, well-drained soil. Incorporate compost or well-rotted organic matter before planting where required and avoid sites that remain waterlogged. - Sow the capsicum seeds.
Sow approximately 5–6 mm deep into seedling trays, cells or small pots filled with quality seed-raising mix. Cover lightly and water gently. - Keep seeds warm during germination.
Maintain warm conditions and keep the growing medium consistently moist but not waterlogged. Germination commonly occurs within approximately 7–21 days under suitable conditions. - Transplant once conditions are warm.
Transplant established seedlings outdoors after frost danger has passed and the soil has warmed. Harden seedlings gradually before planting them into their permanent position. - Space plants correctly.
Allow approximately 50–60 cm between plants to provide adequate room for growth, airflow and fruit development. - Water consistently.
Maintain reasonably even soil moisture, particularly during flowering and fruit development. Avoid repeated severe drying followed by heavy watering. - Harvest green or red.
Pick firm, full-sized green fruit for the traditional green capsicum stage, or leave selected fruit on the plant until it develops its mature red colour and sweeter flavour.
When to Plant Yolo Wonder Capsicum Seeds in Australia
Yolo Wonder Capsicum prefers warm growing conditions and is sensitive to frost. The best sowing period depends on local climate, with gardeners in cooler regions generally starting seed indoors before outdoor conditions become warm enough for planting.
| Climate | General Sowing Guide |
|---|---|
| Tropical | Can be grown through much of the year where conditions are suitable; avoid periods of extreme heat, prolonged heavy rain or other stressful conditions |
| Subtropical | Late winter through summer where conditions are suitable; extended growing periods are possible in frost-free locations |
| Temperate | Start indoors in late winter to early spring with additional warmth; transplant outdoors after frost danger has passed |
| Cool / frost-prone | Start seeds indoors with warmth in spring and transplant after the final frost once outdoor conditions are consistently warm |
For best results, consider local temperatures and frost risk rather than relying on the calendar alone. Capsicums establish and grow much more vigorously once both soil and air temperatures are consistently warm.
What Does Yolo Wonder Capsicum Look Like?
Yolo Wonder produces the familiar blocky fruit associated with traditional bell capsicums. Fruit is generally three to four lobed with thick, fleshy walls and develops on relatively compact, leafy plants.
The fruit initially develops a dark green colour and can be harvested at this stage. When left on the plant to reach full physiological ripeness, the skin changes from green to red.
Individual fruit size varies according to temperature, soil fertility, water availability and other growing conditions, but Yolo Wonder typically produces medium-sized bell capsicums around 10 cm in size.
The variety is also known for its relatively dense foliage, which provides useful shade for developing fruit during warm, sunny conditions.
About Yolo Wonder Capsicum
Yolo Wonder is an established American sweet pepper variety released by the Campbell Soup Company in 1952.
The variety was developed from California Wonder and Elephant Trunk parentage and was selected for characteristics including its compact plant habit, dense foliage and bell-type fruit.
Yolo Wonder takes its name from Yolo County, California. It became an established sweet pepper variety and remains available to home gardeners and growers today.
It is an open-pollinated cultivar of Capsicum annuum rather than an F1 hybrid.
Green vs Red Yolo Wonder Capsicums
Green and red Yolo Wonder capsicums are different stages of ripeness from the same plant.
Green capsicums: Harvest the fruit once it has reached a useful size and developed firm, thick walls. At this stage, Yolo Wonder has the fresh flavour and crisp texture associated with green capsicum.
Red capsicums: Leave selected fruit on the plant beyond the green stage until the skin develops its mature red colour. Fully ripe red fruit generally develops a sweeter flavour than fruit harvested green.
Harvesting at either stage is suitable. The choice depends primarily on the flavour, colour and culinary use preferred.
Harvesting Yolo Wonder Capsicums
Yolo Wonder can be harvested while the fruit is mature and green or left on the plant until it ripens completely to red.
Harvest green fruit once it has reached a good size, developed firm walls and has the characteristic dark-green colour. For red capsicums, allow fruit to remain on healthy plants until the colour develops fully.
Harvest timing varies considerably with temperature and growing conditions. Under favourable conditions, plants can begin producing harvestable fruit in approximately 70–90 days, with fully coloured red fruit generally requiring additional time.
Use clean secateurs or a knife to cut mature capsicums from the plant rather than pulling strongly on the fruit, which can damage branches.
Regularly removing mature fruit can help keep plants productive while temperatures and other growing conditions remain favourable.
How to Use Yolo Wonder Capsicums
Yolo Wonder is a versatile sweet capsicum suitable for both fresh and cooked dishes.
- Fresh salads: Slice or dice crisp green or ripe red capsicum into salads and fresh dishes.
- Stuffing: The blocky shape and thick walls make Yolo Wonder particularly useful as a stuffed capsicum.
- Roasting: Roast whole or sliced fruit to soften the flesh and develop its sweetness.
- Grilling: Thick slices or sections hold up well on the barbecue or grill.
- Stir-fries: Slice into strips for stir-fries and other quick-cooked dishes.
- Sauces and casseroles: Add diced capsicum to tomato sauces, casseroles, stews and savoury dishes.
- Fresh snacks: Crisp raw capsicum can be sliced into strips and served with dips or other fresh vegetables.
Growing Yolo Wonder Capsicum in Pots
Yolo Wonder can be grown successfully in containers provided plants receive sufficient root space, sunlight, nutrients and water.
Choose a reasonably large container with excellent drainage and fill it with a fertile, free-draining growing medium. Position the container in full sun.
Container-grown capsicums can dry out more quickly than plants growing in garden soil, particularly during hot weather and while fruit is developing. Check soil moisture regularly and water when required without keeping the growing medium permanently waterlogged.
Plants carrying a heavy crop may benefit from a stake or other light support to prevent branches from bending under the weight of developing capsicums.
Frequently Asked Questions
What is Yolo Wonder Capsicum?
Yolo Wonder is an open-pollinated sweet bell capsicum variety of Capsicum annuum. It produces blocky, thick-walled fruit that develops dark green before ripening to red.
Is Yolo Wonder a chilli or a sweet capsicum?
Yolo Wonder is a sweet bell capsicum. Although capsicums and many chillies belong to the same species, Capsicum annuum, Yolo Wonder is grown for sweet, non-pungent fruit rather than chilli heat.
Is Yolo Wonder open-pollinated?
Yes. Yolo Wonder is an open-pollinated cultivar rather than an F1 hybrid.
What colour is Yolo Wonder Capsicum?
The fruit develops dark green and can be harvested at the green stage. When left on the plant to fully ripen, it changes to red.
How large does Yolo Wonder Capsicum grow?
Yolo Wonder commonly produces medium-sized, blocky bell fruit around 10 cm in size. Actual fruit size varies according to growing conditions.
How tall does Yolo Wonder Capsicum grow?
Plants generally grow to approximately 60 cm tall, although final plant size can vary according to climate, soil fertility, container size and growing conditions.
Is Yolo Wonder Capsicum hot?
No. Yolo Wonder is a sweet capsicum and does not have the characteristic pungent heat associated with chilli varieties.
Can Yolo Wonder Capsicums be harvested green?
Yes. Yolo Wonder is commonly harvested while green. Fruit can also be left on the plant until it reaches its fully ripe red stage.
Do green Yolo Wonder capsicums turn red?
Yes. Green is the immature colour of the fruit. If left on the plant to fully ripen, Yolo Wonder capsicums develop a red mature colour.
What is Yolo Wonder Capsicum used for?
Its thick-walled, blocky fruit is suitable for salads, stuffing, roasting, grilling, stir-fries, sauces, casseroles and general cooking.
How deep should I sow Yolo Wonder Capsicum seeds?
Sow seeds approximately 5–6 mm deep in quality seed-raising mix and keep them warm and consistently moist during germination.
How long do Yolo Wonder seeds take to germinate?
Under suitably warm conditions, germination commonly occurs within approximately 7–21 days. Cooler growing media can delay germination.
Does Yolo Wonder Capsicum need full sun?
Yes. A warm position receiving plenty of direct sunlight generally provides the best conditions for strong growth, flowering and fruit production.
When should I plant Yolo Wonder Capsicum seeds in Australia?
In temperate and frost-prone areas, start seeds indoors with additional warmth in late winter or spring and transplant after frost danger has passed. Gardeners in warmer frost-free climates generally have a longer growing season.
How long does Yolo Wonder Capsicum take to harvest?
Harvest can generally begin at approximately 70–90 days under favourable conditions, although timing varies according to temperature, plant establishment and whether fruit is harvested green or allowed to ripen fully red.
Can Yolo Wonder Capsicum be grown in pots?
Yes. Yolo Wonder can be grown in a sufficiently large container with good drainage, fertile growing medium and plenty of sunlight.
Why is my capsicum plant flowering but not setting fruit?
Temperature extremes, insufficient light, plant stress, irregular watering and poor pollination conditions can reduce fruit set. Maintain healthy plants with adequate sunlight and reasonably consistent moisture, and avoid excessive nitrogen fertiliser.
Where can I buy Yolo Wonder Capsicum seeds in Australia?
Seedmart supplies Yolo Wonder Capsicum vegetable seeds for Australian home gardeners and growers. This classic sweet bell variety produces thick-walled green-to-red fruit suitable for fresh eating, stuffing, roasting, grilling and everyday cooking.
Learn More About Growing Capsicums
Yolo Wonder is a warm-season sweet capsicum that performs best with warmth, full sun and consistent care. Start seeds early enough to provide plants with a long growing season, particularly in Australia’s cooler temperate regions.
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