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botanical name:
Tulipa 'Keizerskroon'
Tulipa 'Keizerskroon' © Deeproot Plant Base
common name:  Tulip
synonyms:  Tulipa 'Grand Duc
family:  Liliaceae
characteristics: perennial, scented/aromatic
height: 0.35m
width: 0.15m
growth rate: medium
growth habit: bulb/corm
leaf colour: blue-green
flower colour: red & yellow
main season: April
poison symbol poisonous or irritant
aspect: full sun
conditions: dry soil, moist soil, sandy soil
preferred soil pH: any
minimum temp: -23°C
USDA zone: 6 to 9
description:
Popular old variety with bright crimson-red flowers edged with yellow, in mid-April.

cultivation:
Well drained, preferably neutral to alkaline soil in sun.
Plant bulbs in late summer and autumn at a depth of 10 to 15cm. For best performance, lift bulbs annually after foliage dies back, store and replant.

propagation:
By bulb offsets.

other notes:
Division 1 - Single Early

In cultivation since 1750.

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