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U.S. Patent (USPPAF)
Southern Highbush Blueberry Variety

General Description

Magnus is an early-mid season cultivar of large fruit for hand harvesting. A strong growing plant with good survival.


Cultivar name: Magnus (selection code FL04-213)​

Recommended for Florida: yes

FL region best adapted to: north-central Florida

Production system​: deciduous system

Hydrogen cyanamide:​ performs well with or without hydrogen cyanamide

Machine Harvestability: not recommended; probably will not perform well using current machine harvesting technology.

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

         o North-central FL (2018-2020): 6.5 – 11.0 lbs/plant, average 9.1 lbs/plant

Known disease susceptibility: none observed to date

Known insect damage susceptibility: none observed to date

Fruit quality data:

          o Fruit firmness: 187 – 245 g/mm, average 203 g/mm, a little higher than Emerald

          o Berry Weight: 2.4 – 2.9 grams, average 2.7 grams, a little higher than Emerald

          o Berry Diameter: 16.7 – 19.8 mm, average 18.5 mm, similar to Emerald

          o Brix: average 9.8 – 11.5, average 10.7, lower than Emerald, similar to Endura and Patrecia

          o Brix/Acid Ratio: 11.6 – 68.4, average 36.7, higher than Emerald

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

          o Wax/bloom: high

          o Fruit defects: none observed 

          o Flavor Score: 28.8 – reference Emerald (19.9), Kestrel (29.0)

          o Aroma: none

Cultivars with overlapping timing of flowering:​ Emerald, Patrecia, Farthing, Springhigh, Kestrel, Avanti, Optimus

Other information: High yield potential with early bloom and early production of large fruit for hand harvest. Very consistent across years. May require freeze protection in January.

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

Performance 2018 Season

Fruit Quality and Yield

The following plots show the most important fruit quality traits and yield, across the season.

The vertical lines in the yield plots indicate when 10%, 50% and 90% of the harvest was achieved during the season.


Dotted lines indicate the desired values for new cultivars:


  • Berry weight greater than 2g

  • Fruit Diameter greater than 14mm

  • Firmness higher than 150g/mm

  • Brix higher than 10%

  • TTA less than 1%

  • Brix/TTA higher than 14 units


Warning: Yield plot coming from harvesting of two bushes. Values may seem overestimated as all the fruit from the bush is harvested, and because this is harvest yield and no packed yield. Use this data to compare among cultivars and no to predict potential yield on your farm.


Measurements are in grams (g). To convert from grams to pounds (lb) use the following formula:

lb of fruit per bush = (g of fruit) x (0.002204)

Magnus_Citra FL_2019
Magnus_Central-North FL_2019
Magnus_Citra FL_2018
Magnus_Central-North FL_2018
Magnus Gallery
License Availability

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

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