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botanical name:
Veronica longifolia 'Blauriesin'
Veronica longifolia 'Blauriesin' © Deeproot Plant Base
common name:  Speedwell
synonyms:  Veronica longifolia 'Blue Giantess', Veronica longifolia 'Foerster's Blue'
family:  Scrophulariaceae
characteristics: perennial
height: 0.90m
width: 0.45m
growth rate: medium
growth habit: clump
leaf colour: green
flower colour: blue
main season: Summer
aspect: full sun, part shade
conditions: moist soil
preferred soil pH: neutral
minimum temp: -15°C
USDA zone: 4 to 9
description:
Clump forming perennial with toothed green leaves and tall slender spikes of densely packed deep-blue flowers in summer.

cultivation:
Moderately fertile, moist, well drained soil in full sun or bright part shade.
Dead-head regularly to extend flowering period

propagation:
By division in autumn or spring.

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