Maidenhair Tree ‘Blagon’ · Ginkgo biloba ‘Blagon’

The maidenhair tree is a deciduous gymnosperm of upright to conical habit, grown for its distinctive fan-shaped leaves with dichotomous parallel venation and for the clear golden-yellow autumn colour the foliage takes before falling. 'Blagon' refines the species form to a markedly columnar outline, reaching roughly 12 to 15 metres in height but only 3 to 5 metres across, the narrow dense crown turning the autumn display into a vertical column of gold. This makes it a working answer to tree pits, alignments, and formal schemes where a full-spreading canopy will not fit.

Hardiness is the species' strongest specification argument. Ginkgo is reliably winter-hardy from USDA zone 3 through zone 9, withstanding minima well below minus 30 degrees Celsius, so 'Blagon' performs without winter protection from the Aegean coast to southern Scandinavia and across the continental interior to the Pannonian basin and beyond. There is effectively no northern or eastern limit within Europe to flag; the tree is as defensible in Helsinki or Warsaw as in the Po valley.

At the warm end it is equally secure. The species tolerates prolonged summer maxima above 35 degrees Celsius, urban air pollution, compacted soils, and moderate drought once the deep, anchoring root system is established, and it is moderately salt-tolerant in coastal and de-iced settings. These traits, combined with high resistance to pests and disease, account for its long record as a street and avenue tree under hard urban conditions.

It accepts acidic through alkaline soils of sandy or clay texture provided drainage is sound; standing wet is the one condition to avoid. Site in full sun for the best autumn colour and densest crown. Growth is slow to moderate, which keeps the columnar form tight and the structure predictable, and specifying grafted male stock avoids the malodorous seed of female trees. For schemes that would otherwise reach for a fastigiate Quercus robur or an upright Acer platanoides, 'Blagon' offers the same vertical discipline with a far wider climatic envelope and a longer, more luminous autumn season.