A 4-year `Satsuma' mandarin cultivar trial was conducted on the California Central Coast in San Luis Obispo. Cultivars compared were Owari, Dobashi Beni, and Okitsu Wase, all on Carizzo citrange rootstock. Trees were from 3 to 6 years of age and in their first 4 years of production during the four seasons that data was taken. Data taken each year was fruit maturity, color, size, and yield. Tree size was measured in the fourth year. `Okitsu Wase' fruit were harvestable 2 to 4 weeks earlier than `Owari' and `Dobashi Beni' considering meeting both minimum soluble solids to acid ratio (6.5/1) and minimum color (75%). `Okitsu Wase' was more consistent as to time of maturity. Maturity time of all cultivars varied each season based on weather. `Okitsu Wase' first minimum internal maturity varied from 15 Oct. to 1 Nov. Minimum color varied from 1 Nov. to 1 Dec. Dobashi Beni first internal maturity varied from 15 Oct. to 31 Dec. Minimum color varied from 15 Nov. to 31 Dec. Owari first minimum internal maturity varied from 15 Nov. to 31 Dec. Minimum color varied from 15 Nov. to 31 Dec. `Owari' had the highest total yield for the 4 years, followed by `Dobashi Beni'. `Okitsu Wase' had a significantly lower total yield than the other two cultivars for the 4 years. `Okitsu Wase' had higher percentages of smaller fruit and lower percentages of larger fruit than the other two cultivars in the first and fourth crop year, but had comparable percentages of larger fruit in the second and third year. The `Okitsu Wase' was a smaller tree than both the `Owari' and `Dobashi Beni' in height, width, and canopy volume.