Myths About Growing Damsons in Scotland

“A damson is just a smaller variety of plum, not a genuinely different fruit”

Damsons (Prunus insititia) and plums (Prunus domestica) are different species, closely related but not the same plant grown to different sizes. Two separate grow-your-own guides exist for them, the same distinction made for squash and pumpkin.

Our read The two really do look and grow alike, and the RHS summary, smaller and less sweet than plums but ideal for jam, reads like a variety note rather than a species one at first glance. It's a genuine botanical difference underneath a very similar growing routine.

What to do: Treat a damson tree using this guide rather than the plums one, even though most of the growing routine (rootstocks, pruning timing, pH) is shared — the differences that do exist (frost-hardier varieties, pocket plum disease) are damson-specific.

“Damsons are hardier than plums, so their blossom doesn't need frost protection”

Many damson varieties are rated H6, the tree's own cold hardiness, but the blossom stays frost-sensitive regardless. A high hardiness rating protects the dormant tree over winter, not the flowers once they've opened in spring.

Our read It's an easy jump to make: a tree hardy enough to survive -20°C sounds like it should shrug off a late frost too. The two are different kinds of cold tolerance, and they don't transfer.

What to do: Cover blossom with fleece overnight if frost is forecast in March or April, regardless of the tree's own H-rating — the same routine as plums, not a step damsons let you skip.

In Scotland: Scotland's own frost risk sits squarely in this window, so the gap between a hardy tree and vulnerable blossom matters here more than in a milder part of the UK.

“Damsons need a pollination partner tree, the same as apples and most pears”

The widely sold damson varieties are self-fertile, so a single tree is enough — the same pollination story as plums, and a real difference from apples and pears, where cross-pollination between two compatible varieties is closer to the norm.

Our read Damsons sit close enough to plums in most growing advice that assuming the apple-and-pear rule carries over is an easy mistake, especially when moving between several fruit tree guides in a row.

What to do: Plant a single self-fertile variety with confidence, but check the specific variety before buying, since not every damson is self-fertile even though the widely sold ones are.

“Damson trees need regular feeding to crop reliably, like a hungry vegetable bed”

Damson trees growing in regularly mulched soil generally need no additional feeding at all, applying a granular fertiliser only if harvests are particularly poor or the tree shows signs of nutrient deficiency. Damsons need little maintenance beyond annual pruning once established.

Our read A fruiting tree feels like it should need the same regular feeding as a productive vegetable bed, but extra feeding here is a fix for a specific problem, not a routine task.

What to do: Mulch with well-rotted organic matter in late winter or spring and leave it at that unless the tree is genuinely underperforming or showing deficiency symptoms.