Castleton plum trees

Castleton is a modern dual-purpose early-season plum. It was developed for the New York commercial plum-growing market, and these qualities also make it a good choice for the backyard orchard.

Castleton can be eaten fresh when fully ripe or used in the kitchen if picked slightly earlier. It is a freestone plum - the stone falls away from the flesh easily.

Castleton plum trees for sale

Mature height*
1-year Castleton plum trees bare-root
Krymsk 1 rootstock
Medium (8ft-12ft) mature height
Out of stock
1-year Castleton plum trees bare-root
Myrobalan rootstock
Full-size (16ft-24ft) mature height

*Find out more about the rootstocks we use to control the mature height.

How to grow

Castleton will readily over-crop, and it is important to make sure a strong branch framework is developed in the first few years before you allow the tree to set fruit.

Historical details

Castleton was developed at the New York State Agricultural Experiment Station, part of Cornell University, under a team led by John Watson, and released in the 1990s. Castleton is a cross between Valor and Iroquois.

Castleton characteristics


  • Picking season: Early
  • Uses: Eating fresh Cooking
  • Cropping: Heavy
  • Keeping (of fruit): 1 week
  • Flavor quality: Good
  • Flavor style (apples): Sweet/Sharp


  • Gardening skill: Easy
  • Self-fertility: Partially self-fertile
  • Pollination group: 3
  • Pollinating others: Average
  • Ploidy: Diploid
  • Vigour: Slightly large
  • Precocity: Precocious
  • Bearing regularity: Regular


  • Cold hardiness (USDA): (4) -30F / -34C
  • Summer average maximum temperatures: Cool ( 20C - 24C / 68F - 75F) Warm (25C - 30C / 76F - 85F)


  • Country of origin: United States
  • Period of origin: 1950 - 1999
  • Fruit color: Blue - dark