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Plum Tree, ‘Blue Damson’

Grow Your Own Fresh Fruit Trees!
‘Blue Damson’ has medium-small, dark purple-black plums with yellow-green flesh and a sweet tart flavor. Late producing harvest in early September. ‘Blue Damson’ is great for jams and jellies. These plum trees grow 15 to 20 feet tall with a somewhat wider spread. Fruit ranges in color from green-yellow to almost black. A higher sugar content makes it possible to sun-dry the fruit without having it ferment at the pit. They are late bloomers and are better adapted to areas with late frosts or cool, rainy, spring weather. Plums grow in many soil types but do best in fertile, well-drained soil.

Plum leaves are simple, oval to oblong and come to a point at the end. The leaf margins are scalloped. When it flowers in the early spring, a plum tree will be covered in blossoms, and in a good year approximately half of the flowers will be pollinated and become plums. Flowering starts eighty days of warmer weather after winter. The shoots have a terminal bud and the side buds solitary (not clustered), the flowers being grouped 1-5 together on short stems.

A plum is a stone fruit tree in the genus Prunus. The fruit has a groove running down one side, and a smooth stone. The ‘Damson’ plum is an oval, sweet fruit used mostly in jams and was first cultivated in ancient times in the region of Damascus. Careful, early training, annual pruning and shaping are required to insure healthy and productive trees. Prune to avoid formation of V-crotches. Once mature, trees will require little pruning.


# Description Units Available Price/Unit

Plant Details +

Height 15-20' or as pruned
Spacing 15-20'
Hardiness 5-9, -10º to -20ºF
Exposure Full sun
Foliage Green
Fruit Blue-Black
Harvest Early September

General Information +

Botanical: Prunus institia 'Blue Damson'

Cultivator Type: Plum, 'Blue Damson'

Tip: One of the most popular and commonly found plums! Water regularly during first growing season to establish deep root system.

Use: Damson plums are great for fresh eating, cooking, jam, or making wine. Fruits, Landscape, Trees.

Planting/Care Instructions +

Pollinator: Self-pollinating

Moisture: Water regularly as needed.

Planting Instructions: May be planted in any well-drained soil. 1. Dig a hole large enough to encompass the roots without bending or circling. 2. Set the tree in place so the crown (part of the tree where the root meets the stem) is about 1-2 inches below the soil surface. 3. Cover with soil to the original soil surface and water thoroughly.

Fruit Tree Production: Planting Conditions: When choosing a site to plant your fruit tree(s), there are several factors to consider. 1. Consider the MATURE SIZE of the tree when picking a location and provide adequate space for the tree to mature. A good rule of thumb is to space trees ½ of their mature spread, i.e., if a tree has a mature spread of 20', plant each tree no closer than 10'. Also keep this in mind when planting near structures. 2. Fruit trees prefer full sun. Do not plant trees under other shade trees or near tall structures that will cast shade upon the tree. 3. Plant in well drained soil. Fruit trees do not like to have "wet-feet", in other words, they do not like to be in soils that drain slowly or hold water. Pollination When fruit trees produce a large spring bloom, it does not guarantee a plentiful harvest. Successful pollination must occur to produce viable seed, which leads to the development of fruit. There are several ways in which pollination can occur: some fruit trees are "self-pollinating", others are partially self-fertile and require another tree to provide pollen, usually from the same type of tree but a different variety. Pollination Tips: 1. Plant two or more varieties of the same tree. This is the most reliable way of ensuring successful fruit. This is a good idea even with trees that are self-fertile as more fruit set is likely when they are cross-pollinated. 2. Attract bees to your yard. Bees are the number one source for pollination in all fruits. 3. Avoid using insecticides. Although insecticides can benefit by killing harmful garden pests, they also can kill beneficial insects (bees) and therefore should be used only when absolutely necessary. It is NEVER recommended to use insecticides near your fruit trees when they are in bloom. Growing 1. Thin Fruit. After fruit set, if the tree has produced a large amount of fruit and when the fruits are still small, remove 20-35% of the fruits. This will allow the plant to put all of its energy into the remaining fruits, which will in turn produce larger and healthier fruit. If thinning is not done and the plant produces an over-abundance of fruit, it sometimes will throw the tree into a biennial (every other year) producer. Therefore, it is important to thin fruit when the tree produces a large amount of fruit. 2. Rake Leaves. Do not allow fruit tree leaves to fall and remain on the ground under your trees. They can produce spores that can be harmful to the fruit tree. It is important to remove the leaves in the fall before winter. 3. Pruning. Prune during late winter or early spring before the tree breaks dormancy. It is recommended to prune trees on a yearly basis. 4. Cultural Practices. In areas that mice and rabbits are a problem, wrap the trunk of the tree with a quality tree wrap. Also, avoid mechanical injury with weed-eaters and lawn mowers as damaging the bark near the base of the tree can limit fruit production, stunt growth, and in some cases lead to the death of the tree.