top of page

U.S. Patent PP26,312
Southern Highbush Blueberry Variety

Southern Highbush Blueberry Variety

U.S. Patent


General Description

Colossus has very large to jumbo sized fruit with very high fruit firmness. It blooms somewhat later with a short bloom-to-ripening period (fits well within the Florida market window), and has performed well in machine harvesting trials.

Cultivar name: Colossus (selection code FL11-35)

Recommended for Florida: yes

FL region best adapted to: north-central Florida (although may also do well in certain areas of central Florida with sufficient chilling)

Production system: deciduous – in trials performed somewhat better with a low dose of hydrogen cyanamide

Hydrogen cyanamide: recommended; very low doses or no application

Machine harvestability: Possible; has performed well in machine harvest trials. If needed, can be harvested by machine during April for fresh market

Per plant yields (Density 1,452-1,742 plants/acre):

o North-central FL (2018-2021): 3.2 – 12.4 lbs/plant, average 7.26 lbs/plant

o Central FL (2019-2021): 4.76 – 6.14 lbs/plant, 5.5 lbs/plant

Known disease susceptibility: none observed to date

Known insect damage susceptibility: none observed to date

Fruit quality data:

o Fruit Firmness: 252 – 288 g/mm, average 268 g/mm, much higher than Emerald, provides flexibility in harvesting time

o Berry Weight: 2.4 – 4.0 grams, average 2.8 grams, larger than Emerald, similar to Magnus

o Berry Diameter: 17.9 – 23.0 mm, average 20.5 mm, larger than Emerald, similar to Endura and Patrecia

o Brix: average 10.3 – 13.3, average 12.3, higher than Emerald, similar to Optimus and Kestrel

o Brix/Acid Ratio: 14.7 – 21.8, average 17.1, similar to Arcadia

o Fruit Scar: normal (small, dry), similar to Emerald

o Wax/Bloom: medium, similar to Emerald

o Fruit Defects: none observed

o Flavor Score: 24.6 – reference Emerald (19.9), Kestrel (29.0)

o Aroma: none

Cultivars with overlapping timing of flowering: Optimus, Sentinel

Other information: concentrated ripening, good early natural leafing, harvesting should be done when desirable Brix/acid ratio is achieved. Fruit size keeps increasing on the bush.

License availability: For a list of current nursery licensees in the USA, click here

License Availability

For licensing availability contact Florida Foundation Seed Producers (FFSP):​​

bottom of page