The number one cause of red, swollen gums is gingivitis. Gingivitis is a mild form of gum disease caused by poor dental hygiene. When you don't brush or floss regularly, bacteria and plaque builds up around the gums. The bacteria in plaque irritates the gums, causing a puffy, red appearance.

Is it bad if your gums are red?

Gingivitis is the earliest stage of gum disease, an infection of the tissues around your teeth caused by plaque. If you have gingivitis, your gums may become red, swollen and bleed easily. You may also experience bad breath. Because gum disease is usually painless, you may not know you have it.

Where are red gum trees found?

Eucalyptus camaldulensis, commonly known as the river red gum, is a tree that is endemic to Australia. It has smooth white or cream-coloured bark, lance-shaped or curved adult leaves, flower buds in groups of seven or nine, white flowers and hemispherical fruit with the valves extending beyond the rim.