Bitter Orange

Tree

Bitter Orange

Citrus × aurantium

Also known as: Seville orange, Sour orange

TreeShrub Rutaceae EdibleMedicinalOrnamentalWildlife Attractor
Hardiness Zone
9-11
Ideal Temp
55–95°F
Survives Down To
22°F
Life Cycle
Perennial

Bitter orange is the citrus your marmalade dreams are built on — too sour for polite juice, perfect for candied peel and existential cooking. Thorny and tough, it has escaped and naturalized in places that now regret casual planting. In subtropical and tropical Americas it is marginal outside protected 9b pockets; young trees freeze, older wood can return from below if rootstock cooperates. Citrus greening territory means management reality, not Pinterest. ☀️💧 Sun and Water Requirements: - Full sun for flower and fruit density. - Well-drained, slightly acidic soil; consistent moisture but not soggy roots. - Wind protection reduces leaf miner tears cosmetically, not politically. ✂️ Methods to Propagate: - Budding and grafting onto selected rootstocks — commercial path. - Seeds: grow for rootstock or curiosity; fruit quality diverges wildly.

Good Neighbors
  • Comfrey
  • Clover
  • Nasturtium
Cautions
  • Planting in known citrus greening quarantine fantasy
  • Overhead irrigation that fuels fungal pity parties
Known Threats — Organic Solutions Only
Asian Citrus Psyllid
Diaphorina citri
Broad Mite
Polyphagotarsonemus latus
Brown Citrus Aphid
Toxoptera citricida
Citrus Canker
Xanthomonas citri subsp. citri
Citrus Greening
Candidatus Liberibacter asiaticus
Citrus Leafminer
Phyllocnistis citrella
Citrus Mealybug
Planococcus citri
Citrus Red Mite
Panonychus citri
Citrus Root Weevil
Pachnaeus litus
Citrus Rust Mite
Phyllocoptruta oleivora
Citrus Whitefly
Dialeurodes citri
Leaf Curl
Taphrina deformans
Oriental Fruit Fly
Bactrocera dorsalis
Rust Mite
Eriophyidae
Scale Insects
Coccoidea
Swallowtail Caterpillar
Papilio polyxenes
Texas Citrus Mite
Eutetranychus banksi