Get Outdoors!: Revel in the beauty of autumn leaf colours

Outdoors enthusiast explores the changing of seasons through colour

During the spring and summer, chlorophyll in tree leaves absorbs sunlight to transform carbon dioxide and water into carbohydrates such as sugars and starch for tree energy and growth.

Carbon is digested into the tree and oxygen is released from the leaves. Isn’t it amazing that plants absorb carbon dioxide and give off oxygen, and animals do the opposite? We should be incredibly grateful for this balance on Earth.

Water and nutrients flow up from the roots into the leaf veins. This food-making process, called photosynthesis, takes place in the numerous leaf cells containing chlorophyll, which gives the leaf its green colour.

Along with the green leaves’ pigment are yellow, orange and red pigments; the same pigments that colour our foods; yellow xanthophyll (as in corn and golden aspen leaves), orange carotenes (as in carrots and mountain ash leaves) and red anthocyanin (as in cherries and red sumac leaves). Most of the year these colours are masked in the leaves by the great amounts of chlorophyll’s green pigment.

But in the fall, after a dry summer, when daylight hours shorten, tree leaves stop their food-making process. The chlorophyll (green colour) stops being produced and fades away allowing the other colour pigments (mainly yellow, orange, and red) in the leaves to show off their brilliant autumn splendour.

Deciduous trees and shrubs shed their solar panels to hibernate through winter and take a break from photosynthesizing. The stems of the leaves weaken (without food) and the leaves fall from the trees blown by the wind or pelted by rain.

But what about the needle-like leaves of pines, fir, spruce and hemlock, or scale-like leaves of cedar and juniper – our evergreens? These hardy trees leaves have less surface area and have a waxy coating, plus they produce a type of antifreeze that stops the chlorophyll from drying up. Their needles or scales stay on the trees during winter and keep their green colour. An exception is our Western Larches. Their soft, unwaxed needles turn golden and fall – they’re deciduous (and coniferous).

The best time to enjoy autumn’s sun-kissed, brilliant colours is on a clear, dry, cool day. One of my favourite autumn colour-viewing spots in Vernon is on Rocky Ridge at Turtle Mountain on a sunny, late afternoon. Lumby’s Salmon Trail, just below the highway, is wonderful to hike in shimmering fall colour. So is Mission Creek in Kelowna’s Springfield Park.

I like to collect a small basket of autumn leaves to decorate my home‘s entry. My kids and I played a fall game when we went hiking; each of us tried to be the first person to shout “fall” when a leaf fell from a tree.

Enjoy the colour; it only occurs for a brief period each fall.

And remember — when you see those yellow, orange and red pigments — they’ve been there all along, and autumn is their time to shine.

Roseanne shares her knowledge of the outdoors to help readers experience and enjoy nature. Follow her on Facebook for more.

READ MORE: Get Outdoors! and give a hoot about owls

READ MORE: Starfish Pack back in Vernon schools


@VernonNews
newsroom@vernonmorningstar.com

Like us on Facebook and follow us on Twitter.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

 

Just Posted

Graham Jones of the Green Pub Moose puts the brakes on Ryan Kurbis of the RE Postill & Sons Orphans in Game 2 of the Boston Pizza Hockey League best-of-three championship series Sunday night at Priest Valley Arena. (Lisa Mazurek/Morning Star)
Vernon arena subject of COVID-19 relief grant application

Priest Valley Arena needs upgrades to the ammonia plant; city supports application to provincial program

Heather and Sean Lastik became the owners of Cobbs Bread Bakery’s Vernon franchise Thursday, Oct. 22, 2020. (Contributed)
New owners of Vernon’s Cobs Bread welcome trick-or-treaters

Heather and Sean Lastik want to give parents a safe trick-or-treating destination amid COVID-19

The Vernon Vipers announced they have signed 20-year-old wingers Josh Prokop and Tyler Carpendale Thursday, Oct. 29, 2020. (Allen Douglas photo)
Vernon Vipers add pair of veteran wingers

Team signs former Viper Josh Prokop, gets Tyler Carpendale on loan from Kamloops Blazers

Several police vehicles were seen at the Sagmoen farm on Salmon River Road in Silver Creek on Thursday night, Oct. 29, 2020. (Martha Wickett-Salmon Arm Observer)
UPDATE: One person arrested, released following police presence at Sagmoen farm

RCMP were at Silver Creek property where remains of 18-year-old Vernon woman were found in 2017

A case of COVID-19 has been confirmed at Little Seedlings Daycare in Armstrong, located beside Highland Park Elementary School (pictured above). Interior Health confirmed the positive case was present at the daycare on Oct. 22 and 23, 2020. (Google image)
COVID-19 case reported at Armstrong daycare

IH letter says positive case was present at Little Seedlings Daycare Oct. 22 and 23

Physical distancing signs are a common sight in B.C. stores and businesses. THE CANADIAN PRESS
272 more COVID-19 cases for B.C., outbreak at oil sands project

Three new health care outbreaks, three declared over

Join Black Press Media and Do Some Good

Pay it Forward program supports local businesses in their community giving

A fundraising initiative has been set up to help Mirjana Komljenovic, who has been diagnosed with Hermansky Pudlak Syndome and requires $2,000 a month to cover the costs of her medication. (gofundme.com)
Fundraiser created to help Summerland woman with rare condition

Mirjana Komljenovic requires costly medication to treat Hermansky Pudlak Syndome

Heather Pescada is Ms. Halloween and when COVID threatened to ruin her haunted fun, she got creative, inventing a six foot candy chute at her Summerland, Trout Creek home.
(Peskelly Family Facebook page)
Okanagan Halloween house invents huge candy chute

The six foot chute looks like the snake from Nightmare Before Christmas

This house at 414 Royal Ave. became notorious for its residents’ and visitors’ penchant for attracting police. It was also the site of a gruesome torture in August 2018. It was demolished in 2019. KTW
6-year sentence for Kamloops man who helped carve ‘rat’ into flesh of fellow gang member

Ricky Dennis was one of three men involved in the August 2018 attack

Cpl. Nathan Berze, media officer for the Mission RCMP, giving an update on the investigation at 11:30 a.m., Oct. 30. Patrick Penner photo.
VIDEO: Prisoner convicted of first-degree murder still at large from Mission Institution

When 10 p.m. count was conducted, staff discovered Roderick Muchikekwanape had disappeared

Among the pumpkin carvings created this year by Rick Chong of Abbotsford is this tribute to fallen officer Cont. Allan Young.
Abbotsford pumpkin carver’s creations include fallen police officer

Rick Chong carves and displays 30 pumpkins every year

A GoFundMe page has been launched to assist Frankie and Billie Douglas as Frankie undergoes surgeries related to an illness which leaves her bones brittle. (GoFundMe photo)
Fundraiser supports Shuswap child battling brittle bone disease

A $5,000 goal has been set to assist Billie and Frankie Douglas as Frankie spends time in hospital

Most Read