Blue Gum, Southern Blue Gum, Tasmanian Blue Gum
Eucalyptus globulus

Family: Myrtaceae (mir-TAY-see-ee) (Info)
Genus: Eucalyptus (yoo-kuh-LIP-tus) (Info)
Species: globulus (GLOB-yoo-lus) (Info)
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Category:

Trees

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

over 40 ft. (12 m)

Spacing:

30-40 ft. (9-12 m)

over 40 ft. (12 m)

Hardiness:

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Foliage:

Evergreen

Aromatic

Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

8.6 to 9.0 (strongly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

Direct sow as soon as the ground can be worked

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry

Allow pods to dry on plant; break open to collect seeds

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored

Regional

This plant has been said to grow in the following regions:

Malvern, Arkansas

Canoga Park, California

Hayward, California

San Leandro, California

Morehead City, North Carolina

Raleigh, North Carolina

Columbia, Tennessee

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Gardeners' Notes:

4
positives
1
neutral
0
negatives
RatingContent
Positive

On May 15, 2014, RosinaBloom from Waihi
New Zealand (Zone 1) wrote:

The Southern Blue Gum has been known to reach up to 330
feet. They are often seen in our New Zealand pastoral landscape.

Neutral

On Oct 17, 2008, baiissatva from Dunedin
New Zealand wrote:

Zone 9b Coastal Otago New Zealand

Our property is surrounded by a hulking feral posse of these gigantic gums- but I dont really mind - Im a fatalist when it comes to having our roof crushed by stray limbs. :-)
From a sheer cliffside the gum out in front has grown about 20m in 12 years. Off to the east an existing behemoth tops out at 40ms and is currently (mid spring) smothered in a tiered canopy of huge creamy yellow flowers, with resulting avian attention.
They regularly 'self prune', dropping huge dead, and sometimes live, limbs without warning. I imagine the habit is much worse in a region with wood-boring insects.
They self seed with gay abandon, the seedlings going straight up with juvenile foliage for about 6 ms before branching and taking on ... read more

Positive

On Jun 1, 2008, Lodewijkp from Zwolle
Netherlands (Zone 7a) wrote:

nice euc

Pros

Certainly one of the fastest growing eucalyptus.
Nice Fragrance
Nice color and foliage
Can grow in any soil as long it isn't very fertile.
Drought tolerant, water tolerant.
Easy to sow, even old seeds wil germinate in 3 weeks.
Nice flowers
Attracts alot of wildlife
No pests or diseases and can repel some insect by it's fragrance

Cons

Not reliable hardy
too fast growing for container, becomes rootbound very quickly and never recovers.
Grows too fast , the stem is not hardened enough versus wind.
Fertilizer or very fertile soil wil make it grow top heavy.
not for windy sites.
grows too large to shelter in winter zones 8 and 7... read more

Positive

On Feb 13, 2004, airren from Alabaster, AL (Zone 7b) wrote:

I grew a couple of these from seed during the summer. Six months later they are both six feet tall plus. I live in mid Alabama, and though these monstrosities are not supposed to tolerate our winters, I'm planning on planting them outsite in April just to see how big they will get until frost (they live in the greenhouse now and they're approaching the ceiling!). When these trees are young their leaves are really beautiful grey/green.

Positive

On Feb 2, 2004, palmbob from Acton, CA (Zone 8b) wrote:

Truly massive species with a huge, twisted trunk and up to and sometimes over 200' tall. This Tasmanian native is planted commonly as an avenue tree in the Los Angeles area, particularly along athletic fields. It is messy tree with peeling bark and a constant leaf litter. THe bark is a pale color and the leaves a dull green. Reportedly in the heat of day, the leaves give off essential oils and from a distance this gives the sky line a blue tinge. There is a mountain range in New South Wales called the Blue Mountains for this reason (per a contributing member from Down Under- thanks!).