Sequoiadendron giganteum - Mammoth Tree, Wellingtonia

Variety overview

Specifications :

Origin:

Western North America

Habit:

A massive tree, 30-50 m tall, the largest specimen in Europe being 48 m tall, 10-12 m wide; conical with a straight leader, the base of the stem broadening; branches arching down with ascending twig tips, usually with branches to the ground; almost not growing when young, gradually medium-growing to strong-growing, 30-60 (70) cm a year.

Bark:

Cinnamon-red on old specimens, spongy-stringy to the touch, thick.

Leaves:

Scaly needles lying on the twigs, grey-green.

Roots:

Far-reaching, shallow roots, only developing a tap-root in the first years.

Demands:

Sun to light shade, tolerating semi-shade when young, likes warmth or moderately cool, usually frost hardy; all the needles turn brown after harsh frost, but the tree usually regenerates in the following year; wind resistant.

Soil:

Fresh to moist, sensitive to drought; acidic to alkaline; on all nutritious, sandy, gravelly or loamy-humic soils; often very sensitive to frost on heavy soil; on this kind of soil not long-lived.

Hardiness:

Zone 6b

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