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You are here: Home / Articles / Coastside Disaster Preparedness / Are Eucalyptus Trees Flammable?

Are Eucalyptus Trees Flammable?

November 18, 2019 by Michelle

ARTICLE. California hillsides were ablaze last year and it looks like a similar disaster may occur again this season. Eucalyptus trees are common in California and the warmer states of the United States. They are also found in Australia, of which many are native. The blue gum variety were introduced around the 1850s as ornamental plants and as timber and fuel. So are eucalyptus trees flammable? In a nutshell, yes. These beautiful stately trees are filled with aromatic oil, which makes them highly combustible. The picture this paints is of California and other areas experiencing serious eucalyptus fire damage.

Are Eucalyptus Trees Flammable?

Eucalyptus trees are widespread in California and have been introduced to many other warm states. In California, the trees have spread so prolifically that there are entire woodlands almost completely made up of gum trees. Efforts are underway to eradicate the introduced species and return woodlands to the native species. This is because the eucalyptus has displaced natives and it changes soil composition where it grows, altering other life forms as it does so. Eucalyptus fire hazards are also cited in efforts to remove the trees.

There are some native eucalyptus but the majority have been introduced. These hardy plants have delightfully scented, volatile oil in all parts of the plant. The tree sheds bark and dead leaves, which make a perfect pile of tinder under the tree too. When the oils in the tree heat up, the plant releases flammable gas, which ignites into a fireball. This accelerates the eucalyptus fire hazards in a region and discourages firefighting efforts. Removal of the trees has been recommended largely due to eucalyptus fire damage but also because they are taking the place of native species. The plants are considered dangerous in fire prone areas because of their habit of shooting sparks if they catch fire. Eucalyptus oil and fire are a match made in heaven from the fire’s perspective but a nightmare for those of us in its path.

Eucalyptus Oil and Fire

On hot days in Tasmania and blue gum’s other native regions, eucalyptus oil vaporizes in the heat. The oil leaves a smoggy miasma hanging over the eucalyptus groves. This gas is extremely flammable and the cause of many wild fires. The natural detritus under the tree is resistant to microbial or fungal break down due to the oils. This makes the tree’s oil a wonderful antibacterial, antimicrobial, and anti-inflammatory, but the unbroken down material is like using kindling to start a fire. It is tinder dry and contains the flammable oil. One bolt of lightning or a careless cigarette and the forest can easily become an inferno.

Fire Friendly Flammable Eucalyptus Trees

Scientists speculate that flammable eucalyptus trees evolved to be “fire friendly.” Rapidly catching fire until there is no obvious tinder allows the plant to retain most of its trunk when fire moves on to find more to burn. The trunk can sprout new limbs and regenerate the plant unlike other types of trees, which have to re-sprout from the roots. The ability to retain the trunk gives the eucalyptus species a jump start on regrowing from the ashes. The plant is already head and shoulders above the native species when fire recovery begins. The eucalyptus trees easy recovery added with its volatile oily gasses, make it a potentially threatening species for California woodlands and similar areas known to house these trees.   ~ From GardeningKnowHow.com

READ MORE at Gardening Know How: Eucalyptus Fire Hazards: Are Eucalyptus Trees Flammable https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/eucalyptus-fire-hazards.htm

 


HOW DO WE ELIMINATE DANGEROUS EUCALYPTUS TREES?

 JAN 03 2019 02:40 PM

By Denise S. Adams

How do we mobilize to get the City and County to remove dangerous, combustible Eucalyptus trees? The founding estate Barrons imported from Australia these foreign weed trees that spread quickly, and are cost-prohibitive to maintain. Each tree costs property owners thousands which results in neglect: pay the water bill or pay for tree care.

The County only wants to maintain certain trees every 5-10 years by pruning a few branches. Occasionally  Edison will trim a few branches, only if branches engage with high power wires, and multiple customers complain.   EDISON does agree it would be wonderful for the Barker Pass Rd trees to be removed that are in the extreme high wind tunnel.   EDISON acknowledges that nothing has changed since the 1925 earthquake and fire due to exposed high voltage wires, and old transformers.

With Sacramento planning to take over PG&E, and possibly Edison due to fires, we can expect less or no maintenance in Calzuela.  City Council has yet to focus on fire and disaster prevention.

As part of the endangered species of property owners, what’s the plan to remove these horrible trees? We’ve had enough drama and trauma in Montecito and SB.


Do you have an opinion on something local? Share it with us at ed@edhat.com. The views and opinions expressed in Op-Ed articles are those of the authors and do not necessarily reflect those of edhat.

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Filed Under: Coastside Disaster Preparedness, Coastside Fire Protection District, Home Top List, Podcasts, Public Agencies Tagged With: 2019, Cal Fire, Coastside, cut trees, death, death planning, disaster, Education, emergency, emergency prep, eucalyptus, fire, Half Moon Bay, Half Moon Bay Fire, HMB, planning, san mateo county, vote

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Charise McHugh of the Half Moon bay Chamber of Commerce has worked for several years to organize businesses on the coastside in an emergency via the Coastside Emergency Action Plan). If you are a business and have not already participated, please contact the Chamber. In an emergency we need to know where our resources are and how to deploy materiel, and how to get refunded by FEMA.
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Doctors and nurses work together to become the backbone of an emergency medical situation. Coastside Emergency Experts will tell you that the Coastside will be on its own in a major earthquake disaster for 5-7 days. And we no longer have a Medical Reserve Corps on the Coastside! Contact mdragony@coastsidebuzz.com if you are interested in creating a new chapter.

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michelleMichelle Dragony, founder of CoastsideBUZZ.com, is also a civilian CERT trainer working with Dave Cosgrave, Cal Fire Battalion Chief of Half Moon Bay, and Ari Delay, Cal Fire Battalion Chief of La Honda. Email here at mdragony@coastsidebuzz.com if you have any questions.

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