Earliblue Blueberry is a northern highbush variety that earned its name by delivering some of the season's earliest crops, with ripe berries ready to pick in June. Developed in 1936 and introduced to gardeners in 1952, this hybrid grows into a vigorous, upright bush reaching 4 to 6 feet tall and wide, producing medium to large light-blue berries with a distinctly aromatic character. Hardy from zones 5 through 9, it thrives in full sun and acidic soil, requiring minimal water once established. While self-fertile, planting it alongside varieties like Bluecrop or Jersey amplifies yields significantly, rewarding attentive gardeners with reliable harvests year after year.

Photo © True Leaf Market
48
Full Sun
Low
5-9
72in H x 72in W
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High
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Earliblue ripens earlier than most highbush varieties, delivering those first sweet, light-blue berries in June when the season is still young. The berries are firm and aromatic, equally at home eaten fresh off the bush or transformed into jam and pie filling. Its upright, well-shaped growth habit and dark green foliage make it ornamental enough to anchor a landscape bed, while its proven cold hardiness and drought tolerance mean it asks very little once you've chosen its spot.
Earliblue berries shine fresh off the bush, where their firm texture and aromatic sweetness are most vivid. They hold their shape beautifully in pies and jams, making them excellent for bakers and preservers who value fruit that doesn't collapse into mush during cooking. The berries also freeze exceptionally well, allowing you to extend their season deep into winter for smoothies, baking, and cooking.
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Earliblue is sold as rooted plants or dormant canes rather than seeds. Plant in spring after the last frost date, setting the root ball at the same depth it was growing in the nursery pot. Space plants 4 feet apart in rows spaced 10 feet apart. Soak roots in water for an hour before planting to rehydrate them. Mulch heavily with pine needles or peat moss immediately after planting to acidify the soil and conserve moisture.
Berries are ready to harvest when completely blue and slightly springy when squeezed gently; they do not ripen further after picking. Fruit ripens over several weeks beginning in late June, so plan to harvest regularly throughout early summer, checking plants every few days as berries mature. Gently remove fully ripe berries by hand, leaving unripe ones on the bush to develop further. Harvest in the cool morning if possible, and refrigerate berries shortly after picking without washing them until you are ready to eat.
Prune Earliblue in late winter or early spring while the plant is still dormant. Remove any dead, diseased, or crossing canes at ground level, then thin out crowded growth to open the interior to light and air circulation. Younger plants benefit from light heading back to encourage branching and a fuller, more upright form. As the plant matures, focus pruning on maintaining shape and removing the oldest canes to stimulate vigorous new growth; this sustained renewal keeps the plant productive well into old age.
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“This variety emerged from deliberate breeding efforts in 1936, marking a significant moment in blueberry domestication when plant breeders were systematically developing highbush cultivars suited to northern gardens. It took another 16 years before Earliblue reached commercial introduction in 1952, a lag that reflects the rigorous testing required to confirm it could deliver reliable early crops across diverse growing regions. By bringing early season production to home and commercial growers, Earliblue helped expand blueberry cultivation beyond its traditional southern stronghold into colder climates where gardeners had previously assumed the fruit was beyond reach.”