TifBlue Blueberry

TifBlue was bred by Dr. W.T. Brightwell at the University of Georgia Coastal Plain Experiment Station in Tifton in a cooperative program with the USDA Agricultural Research Service, and released in 1955. Its parentage is documented as a cross of ‘Ethel’ x ‘Clara’, both wild or early-selected rabbiteye types gathered from the natural range of Vaccinium virgatum in the Deep South. The name reflects its Tifton origins. Brightwell, who established a dedicated 50-acre blueberry research farm near Alapaha, Georgia, in 1945, released TifBlue alongside Woodard and later Brightwell as the founding cultivars of the modern rabbiteye industry. For decades TifBlue was the reference standard — planted across roughly 1,500 acres of Georgia blueberry farms by the 1990s, representing approximately half of state acreage at that time. It remains the oldest rabbiteye cultivar still in active commercial planting, and new releases continue to be evaluated against it. TifBlue has also served as a parent in subsequent breeding work, including the cross that yielded Ochlockonee.

TifBlue requires a well-drained, highly acidic soil with a pH of 4.5–5.0 and is unforgiving of alkaline conditions — amend with elemental sulfur well ahead of planting and confirm pH before setting plants. It performs best in Zones 6–9, benefiting from the low chill hours (approximately 500–600 hours below 45°F) common to the South and warm-temperate regions. Space plants 5–6 feet apart in rows 10–12 feet apart for adequate airflow, and mulch heavily with pine bark or wood chips to maintain soil moisture, suppress weeds, and gradually acidify the root zone as the mulch breaks down. Although drought-tolerant once established, consistent irrigation during fruit development prevents uneven ripening and improves berry size. TifBlue is a vigorous grower that reaches 10–15 feet at maturity; annual dormant pruning is essential to channel energy into fruit-bearing wood and maintain manageable height. Avoid overhead irrigation during bloom to reduce fungal disease pressure.

USDA Hardiness Zone: 7-9
AHS Heat Zone: 7-9
Chill Hours: 650-850
Sun Requirements: Full Sun
Soil pH: 4.5-5.0
Soil Type: Acidic, sandy loam high in organic matter
Soil Drainage: Well-drained (excellent drainage required; intolerant of waterlogging)
Water Requirements: Medium (consistent, even moisture; shallow-rooted and intolerant of both drought and waterlogging)
Drought Tolerance: Moderate; more drought-tolerant than highbush species once established
Heat Tolerance: High; more heat-tolerant than northern highbush; well-suited to hot, humid Southern climates
Plant Spacing: 5-6 ft in-row; 10-12 ft between rows
Container Suitability: Limited; possible in large containers but not ideal due to vigorous rabbiteye growth habit; southern highbush preferred for containers
How to Prune: Prune during dormant season (late winter); remove low branches, thin crowded canes, remove old low-vigor wood; on young plants cut back 1/2-2/3 of height at planting; light annual pruning to maintain harvest height and berry size

TifBlue is one of the tallest and most vigorous rabbiteye blueberries available, typically reaching 10–15 feet in height with a broadly upright, multi-stem habit and a spread of 6–10 feet at maturity. The deciduous foliage is dense and dark green through the growing season, transitioning to rich crimson and orange tones in autumn — making TifBlue as ornamentally interesting as it is productive. Branches are moderately spreading with good structural strength and are capable of bearing heavy fruit loads without excessive drooping. As a species native to North America, TifBlue supports native bees, butterflies, songbirds, and small mammals throughout the season — from early-spring pollinators visiting the urn-shaped flowers to fall migrants feeding on lingering fruit. Growth rate is slow to moderate in the establishment years but accelerates significantly once the root system is settled into properly acidified soil. It integrates naturally into edible hedgerows, mixed borders, or naturalized areas.

Mature Height: 8-15 ft tall
Mature Spread: 6-10 ft wide
Growth Habit: Upright, vigorous; multi-stemmed deciduous shrub
Growth Rate: Slow to Moderate
Foliage Type: Deciduous
Food Forest Layer: Shrub
Permaculture Role: Edible fruit shrub; pollinator nectar source; wildlife food (berries) and habitat
Leaf Color: Green
Fall Foliage Color: Brilliant red to red-purple; outstanding ornamental fall display
Thorns?: No
Attracts Wildlife: Flowers attract bumblebees, native bees, and honey bees; ripe berries attract songbirds and small mammals
Life Span: productive for 50+ years with proper management

TifBlue is a rabbiteye blueberry (Vaccinium virgatum) and requires cross-pollination with another rabbiteye variety to achieve commercial-quality fruit set. Planting it alongside two or more compatible companions is not optional — solitary plants produce very poor crops even in ideal conditions. The best on-website pairings are Climax, Powderblue, and Premier, all of which overlap reliably with TifBlue's mid-season bloom window in warm temperate conditions (typically late March to mid-April). Alapaha and Brightwell are additional rabbiteye options that complement TifBlue's bloom timing. Plant at least two pollinators within 50 feet to ensure adequate bee movement between varieties. Native bumblebees are especially effective pollinators of rabbiteye flowers — preserving hedgerow habitat nearby amplifies fruit set. Avoid planting TifBlue alongside highbush or half-high types, as cross-group pollination between rabbiteye and highbush is largely ineffective.

Bloom Season: Very Early
Bloom Window: Mid Mar - Late Mar
Pollination Requirements: Cross-pollination required; not self-fertile; plant 2+ compatible rabbiteye varieties
Pollination Mechanism: Insect-pollinated (buzz/sonication pollination by bumblebees and native bees; honey bees also forage)
Flower Color: White; bell-shaped (urn-shaped) drooping clusters
Ploidy: Hexaploid (2n = 6x = 72)

TifBlue produces medium to large berries — typically 0.5–0.75 inch in diameter — with the characteristic bright powder-blue skin and a firm, crisp texture that handles heat well to shipping and storage. The flavor profile is mildly sweet with a pleasant tartness, tending toward the tannic side when slightly underripe but mellowing into a balanced, classic blueberry taste at full maturity. Fruit ripens mid-to-late season (mid-July through August in a temperate climate), extending the fresh-berry window well past early-season rabbiteye varieties. The firm flesh is ideal for fresh eating, baking, preserves, and freezing — berries retain shape after frozen and thawed, making them especially popular for muffins and cobblers. Fruit clusters are moderately loose, simplifying hand-picking. When fully ripe, TifBlue berries may remain on the bush for 1–2 weeks without significant quality loss, offering a forgiving harvest window for home growers.

Ripening Season: Mid
Harvest Window: Late Jun - Late Jul
Fruit Size: 0.4-0.6 inch
Flavor: Sweet-tart; tart when underripe, sweet and full-flavored when fully ripe; must be fully ripe at harvest for best flavor
Fruit Color: Light blue; powdery blue bloom on skin
Fruit Texture: Very firm; excellent firmness for shipping and handling
Fruit Skin: Smooth; small dry picking scar; good shelf quality
Bearing Habit: Annual bearer; fruit borne on prior-year wood in clusters
Years to Bear: 3-5 years to first commercial harvest; light fruit possible in years 2-3
Storage Life: 10-18 days refrigerated (0°C, 90-95% RH); excellent shelf life due to firm texture
Culinary Uses: Fresh eating, baking (pies, muffins, cobblers), jams, preserves, freezing, smoothies, syrups

TifBlue carries moderate field tolerance to mummy berry (Monilinia vaccinii-corymbosi), the most economically damaging blueberry disease in humid-summer climates. Its vigorous, upright canopy improves air circulation compared to denser varieties, which reduces infection periods for anthracnose fruit rot (Colletotrichum acutatum) and Septoria leaf spot (Septoria albopunctata). Botryosphaeria stem blight (Botryosphaeria dothidea) is a significant threat in drought-stressed or improperly pruned plants — maintaining consistent irrigation and removing blighted canes promptly limits spread. Phytophthora root rot (Phytophthora cinnamomi) is strictly a waterlogging concern; TifBlue in well-drained, raised, or mounded beds is rarely affected. On the pest side, spotted wing drosophila (Drosophila suzukii) is the primary harvest-season threat and is managed through early picking, fine-mesh exclusion netting, and kaolin clay applications. Blueberry maggot (Rhagoletis mendax), cranberry fruitworm (Acrobasis vaccinii), and plum curculio (Conotrachelus nenuphar) are monitored with yellow sticky traps; neem-oil or Spinosad-based OMRI-listed sprays applied at petal fall provide effective organic suppression.

Mummy Berry: Moderately Susceptible
Botryosphaeria Stem Blight: Moderately Resistant
Anthracnose Fruit Rot: Moderately Susceptible
Phytophthora Root Rot: Moderately Resistant
Septoria Leaf Spot: Moderately Susceptible
Spotted Wing Drosophila: Moderately Susceptible
Blueberry Maggot: Moderately Susceptible
Cranberry Fruitworm: Moderately Susceptible
Plum Curculio: Moderately Susceptible

• Correct pH before planting: Test and adjust soil to 4.5–5.0 before planting — TifBlue will stall in anything higher than 5.5.
• Mulch to the drip line: Apply a 4–6 inch pine-bark ring extending to the drip line; keep mulch pulled back from canes to avoid crown moisture buildup.
• Prune for renewal wood: Remove the oldest, thickest canes at the base every 2–3 years to rejuvenate fruiting wood and manage height.
• Harvest at peak flavor: Pick fruit 5–7 days after it turns fully blue — berries continue ripening on the bush after color sets and flavor improves with the extra hang time.

Our 365-Day Plant Guarantee: We ensure that our plants are delivered to you alive and healthy. If your plant does not survive its first year, you're eligible for store credit under these conditions:

1. Your location falls within the appropriate USDA hardiness zone for the plant variety (refer to our hardiness zone map).
2. You maintain the roots' moisture and plant within three days of delivery, following the instructions in our Planting Guide.

If you're concerned about your plant's health, please consult our guide, How to Tell if Your Tree is Dead or Dormant. Remember, our plants are shipped in a dormant state and may leaf out at different times based on their species. To check for plant vital