About Plant Galls

Knopper Gall (Andricus quercuscalicis)
Knopper Gall (Andricus quercuscalicis)

I have always been fascinated by these strange yet sometimes most beautiful growths. Plant galls are something of an oddity when some folk first encounter them, others don’t even know they exist. Plant galls come in all shapes and sizes, and are formed by another organism using the plant as a host, using it for shelter and for food.

Robin's Pincushion (Diplolepis rosae)
Robin’s Pincushion (Diplolepis rosae)

They are caused by insects or mites, fungi or bacteria, and cause a biological reaction within the plant which causes these odd lumps and bumps to form of their tissues.  They affect both herbaceous and wood plants, and there are at least over 1,000 species in Britain alone.

Cherry Gall Wasp (Cynips quercusfolii)
Cherry Gall Wasp (Cynips quercusfolii)

It is most unlikely you would see the mite or insect which causes the majority of these galls for they are very small, some even microscopic, but the species can be identified by the galls they produce.The study of plant galls is called cecidology.

15 thoughts on “About Plant Galls

      1. You’re so right!! Hope you’re watching Planet Earth II? Tonight’s symbiotic relationship was between a large vegetarian lizard and a small carnivorous lizard. Seeing one perched on the head of the other was a highlight for me 😀

        Liked by 1 person

      2. No, I missed ‘Planet earth II’, for I love all documentaries of this type, and David Attenborough is kind of a hero to me. I will probably get the DVD when it comes out 🙂


Your thoughts ...

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.