Fruit TreesGardening

Green Oranges

Category Fruit Trees


How do I change the color from green to orange on my oranges?

Hardiness Zone: 9b

Raj from Kenya


Hi Raj,

That's the ironic thing about oranges-they aren't always orange. Depending on the variety, sometimes oranges are green, yellow or even spotted. Temperature fluctuations are what cause oranges to change color while still on the tree. The pigment responsible for orange-colored oranges is called carotene. In order for oranges to turn orange, cooler temperatures are needed. This breaks down the chlorophyll (the green pigment) so the carotenes can show through. In climates where temperatures stay warm all of the time (Puerto Rico, Central America, South Pacific, West Africa), the oranges tend to remain green.


Before being sold in the U.S., these oranges used to be coated with an orange dye to make them more attractive to consumers. This practice is no longer acceptable by the FDA, so today green oranges are exposed to ethylene gas while in storage. This removes the chlorophyll layer and allows the orange color to emerge.

Fortunately, the color of an orange has little to do with whether or not it's mature enough to eat or if it will taste good. Apples, bananas and tomatoes all naturally give off ethylene gas while ripening. It might be worth a try to store your green oranges in a cool enclosed area (like the fridge) with one or more of these fruits. Who knows, if enough gas is produced, you might see a color change.

Good luck!

About The Author: Ellen Brown is our Green Living and Gardening Expert. Click here to ask Ellen a question! Ellen Brown is an environmental writer and photographer and the owner of Sustainable Media, an environmental media company that specializes in helping businesses and organizations promote eco-friendly products and services. Contact her on the web at


Add your voice! Click below to answer. ThriftyFun is powered by your wisdom!

By stang (Guest Post)
December 12, 20060 found this helpful

"Store Oranges" are dyed for the uniform look. Longer the oranges are left on the tree the "oranger" they will get. They are sweet even if they are only half orange. I live in Centeral Louisiana. Don't know what zone.

Reply Was this helpful? Yes
January 28, 20130 found this helpful

My sister-in-law had an orange tree in Florida and the oranges were always green! They never turned orange, but they were the sweetest, best tasting oranges I've ever had!

Reply Was this helpful? Yes

Add your voice! Click below to answer. ThriftyFun is powered by your wisdom!

Related Content
Home and Garden Gardening Fruit TreesFebruary 1, 2007
Father's Day Ideas!
Mother's Day Ideas!
Pest Control
Ask a Question
Share a Post
Better LivingBudget & FinanceBusiness and LegalComputersConsumer AdviceCraftsEducationEntertainmentFood and RecipesHealth & BeautyHolidays and PartiesHome and GardenMake Your OwnOrganizingParentingPetsPhotosTravel and RecreationWeddings
Published by ThriftyFun.

Desktop Page | View Mobile

Disclaimer | Privacy Policy | Contact Us

© 1997-2019 by Cumuli, Inc. All Rights Reserved.

Generated 2019/04/27 00:34:03 in 1 secs. ⛅️️ ⚡️
Loading Something Awesome!