How to Grow Red Currant Jonkheer van Tets
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Red Currant Jonkheer van Tets
Ribes rubrum 'Jonkheer van Tets'
shrubJonkheer van Tets is a premium red currant cultivar known for producing abundant clusters of bright red, translucent berries with excellent flavor and higher sugar content than many other varieties. This vigorous, upright shrub is prized by home gardeners and commercial growers for its early ripening season and superior quality fruit. The plant typically grows 4-6 feet tall and wide, producing consistent yields year after year with minimal maintenance.
When should you plant Red Currant Jonkheer van Tets in your zone?
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Example Red Currant Jonkheer van Tets timeline · Pittsburgh, PA (Zone 6b)
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Plant Red Currant Jonkheer van Tets
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Red Currant Jonkheer van Tets
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7, with best performance in zones 3-6
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Get my Red Currant Jonkheer van Tets timeline →Growth Stages
Establishment
First yearYoung plant develops root system and establishes growth pattern. Upright branches begin forming the characteristic framework.
Water regularly to establish deep roots. Prune to 4-6 main upright stems. Remove weak or damaged growth. Apply 2-3 inches of mulch.
Vegetative Growth
Year 2, early seasonPlant grows vigorously, producing new shoots and expanding branch structure. Foliage is bright green; no flowers yet or minimal flowering.
Continue regular watering. Prune to maintain open center structure. Remove crossing or inward-growing branches. Fertilize with balanced fertilizer in spring.
Flowering
Late April to May (2-3 weeks)Tiny greenish-yellow flowers appear in drooping racemes (clusters) along the branches in mid-spring. Flowers are inconspicuous but prolific.
Ensure adequate moisture during flowering. Do not overwater or provide excess nitrogen, which reduces fruit set. Avoid pruning during flowering.
Fruiting and Development
June to July (4-6 weeks)Small green berries form and gradually enlarge into clusters of glossy, translucent red currants. Berries ripen to bright red color and develop characteristic translucency.
Maintain consistent watering; inconsistent moisture causes fruit to crack. Thin fruit clusters if berries are small (remove every other berry). Protect from birds with netting if needed.
Harvest and Dormancy
July to NovemberBerries fully ripe and at peak flavor. After harvest, foliage gradually yellows and plant enters winter dormancy with bare branches by late fall.
Harvest ripe berries by cutting entire clusters with scissors. Prune after harvest to remove old wood and maintain shape. Apply dormant oil if pest issues noted.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Monitor for defoliation in early summer. Prune out infested branches. Spray with insecticidal soap or neem oil in early morning. Hand-pick affected leaves.
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Spray with strong water stream to dislodge. Use miticide if severe. Maintain humidity around plants. Plant nasturtiums nearby as trap crop.
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Similar to currant sawfly; inspect undersides of leaves. Remove affected foliage promptly. Apply spinosad or neem oil as needed.
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Harvest ripe fruit immediately to prevent infestation. Remove affected berries. Use yellow sticky traps. Cover fruit with netting in late June.
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Ensure good air circulation through pruning. Avoid overhead watering. Apply sulfur or potassium bicarbonate fungicide. Plant in full sun.
Uses
Fresh eating and preserves
CulinaryRed currants are traditionally used for making jams, jellies, and syrups due to their natural high pectin content. Jonkheer van Tets' superior sugar content makes it excellent for fresh eating, cooking, or preserving. [source]
Garnish and desserts
CulinaryThe beautiful translucent red berries and attractive clusters make red currants a classic elegant garnish for desserts, cakes, and savory dishes. They add both visual appeal and a bright, tart flavor. [source]
Antioxidant and vitamin C source
MedicinalRed currants are rich in vitamin C and antioxidants, historically used in traditional medicine to support immune function and reduce inflammation. They contain anthocyanins and other polyphenols with potential health benefits. [source]
Natural dye production
HouseholdRed currant juice can be used to create natural fabric dyes and food colorants, particularly producing red and purple hues. [source]
Bird and pollinator support
WildlifeThe early flowers provide nectar and pollen for spring pollinators, while the berries feed birds and wildlife in early-to-mid summer. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Jonkheer van Tets ripens in early season (mid-July in most climates), typically 2-3 weeks before other red currant varieties. Harvest when berries are fully red and slightly soft to touch—they will have maximum sweetness and translucency. Cut entire fruit clusters with pruning shears rather than picking individual berries to minimize damage. Berries can hang on the branch for 1-2 weeks after ripening without significant quality loss, allowing for flexible harvesting. A mature plant yields 8-12 pounds of fruit per season.
Fun Facts
- 🌱 Jonkheer van Tets was bred in the Netherlands in the 1950s and is named after a Dutch nobleman; it remains one of the most widely planted red currant varieties worldwide for its reliability and flavor.
- 🌱 Red currants have naturally high pectin content (rivaling apples), making them ideal for jam-making without added pectin—a property that made them invaluable in European home preserving traditions.
- 🌱 The berries remain fresh and translucent for weeks after ripening if left on the plant, allowing harvesting to be delayed until optimal sweetness is reached or until the most convenient time.
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