OLL-4 Sweet Orange (Citrus sinensis ‘OLL-4’)

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⚠ Citrus ships to Florida only ⚠

LIMITED AVAILABILITY! OLL-4 is a very special new commercial variety that was grown to be the most green resistant cultivar. 

This sweet orange cultivar is similar to but better than Valencia. It is one of the series of OLL (‘Orie Lee Late’) oranges that was developed by the University of Florida and grower/researcher Orie Lee, patented in 2017. It is higher yielding, disease resistant, and with more cold and drought tolerance than standard orange varieties and can be grown in the garden or in containers.

OLL-4 trees grow to 19 feet high with a 16 to 18-foot spread. The greenish-white, highly fragrant flowers bloom in the early spring and develop into fruit that stays on the tree without dropping and keeps its quality into the summer. The oranges are juicy and very sweet with a flavor similar to Valencia’s. They are excellent for juice and also for eating fresh with 2 to 5 seeds per fruit and easily peeling skin.

OLL-4 grows best in full sun in rich, well-draining soil that is kept moist but not soggy. It is hardy in USDA zones 9 to 11 but can be grown in containers and even indoors in colder zones.

Planting, cultural care, pruning, and harvesting are similar for all citrus plants, with a few slight variations. Generally, they are best planted in filtered sun with well-drained soil that can hold moisture and nutrients. Citrus trees a particularly high demand for nitrogen. If you’re fantasizing about long afternoons of picking fresh fruit from your personal citrus grove, keep this in mind: The key to growing citrus is setting it up for success from the start.

Plant Type:
Subtropical Evergreen Fruit Tree

Harvest Season:
Winter, Spring, Year-round

Main citrus fruit production will take place in late winter through spring, but may produce throughout the year

Mature Size:
7-30 ft

Mature size varies by citrus tree type. Overall, citrus varieties can be grown in containers and maintained at smaller sizes.

Soil & Moisture:
Well-drained, high fertility and good moisture-holding capacity; High nitrogen demands. Regular watering throughout the first year and throughout flowering and fruiting season.

Light Requirements:
Full Sun, Part Shade

Overall, citrus prefers slightly shady areas and has better fruit production in part shade lighting conditions.


Growth Rate:

Zone Hardiness:
Outdoors 8-11; Patio/Greenhouse 4+

Although their fruit provides a distinctly tropical twist to any drink or dish, Citrus trees trees are actually very cold hardy fruit trees, taking temperatures down to the low 20's!

Grafted and capable of producing fruit within 1 year.

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Sow Exotic offers many different unique varieties of Citrus trees. Shop the Citrus Collection!

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Why We Dig It

Sweet, tangy, juicy citrus fruit is more than just a delicious snack or an essential ingredient in your Sunday afternoon mimosas!

Citrus fruit are an amazing source of Vitamin C, an essential vitamin that helps prevent and treat the common cold/upper respiratory infections and improve heart health. Your body can’t make vitamin C on its own so you need to get it from fruits like citrus, fresh vegetables, berries, etc.

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