What is the red bumps on cherry trees.

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Landscaping92 Asheville, NC(Zone 7a) May 02, 2009

What is the red bumps on cherry trees.

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Landscaping92 Asheville, NC(Zone 7a) May 02, 2009

Photo.

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orodionov Fort Collins, CO May 06, 2009

I was wondering exactly the same thing. My two cherry trees are covered with those little red bumps. I googled for answer, but only found your question. Hopefully somebody here knows

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mocatmom Driftwood, TX(Zone 8b) May 07, 2009

I have no idea what they are, but I did find a handful of internet references to the bumps and they all passed it off as being "not a problem". A link to the most definitive answer on the topic is here: http://www.gardenpunks.com/2008/03/uh-what-kind-of-bug-is-this.html

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May 07, 2009

Ahh Landscaping92. Leave it alone and watch;-) You soon will understand what's going on with your Cherry Tree.

Rachel

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Landscaping92 Asheville, NC(Zone 7a) May 07, 2009

I just found this out. The leaf stalk (petiole) has 2 or more 'nectar glands'. These are seperate from the flower. If the tree is attacked by pests (greenfly for example), these glands exude a special smell and attract beneficial insects that eat the pest, and so help to protect the tree. It is a kind of natural pest control.

In botany, stipule (Latin stipula: straw, stalk[1]) is a term coined by Linnaeus[1] which refers to outgrowths borne on either side of the base of a leafstalk (the petiole). A pair of stipules is considered part of the anatomy of the leaf of a typical flowering plant, although in many species the stipules are inconspicuous or entirely absent (and the leaf is then termed exstipulate).

Stipules are morphologically variable and might appear as glands, scales, hairs, spines, or laminar (leaf-like) structures. A relationship exists between the anatomy of the stem node and the presence or absence of stipules. Most plants with trilacunar nodes have stipules; species with unilacunar nodes lack stipules (Sinnott and Bailey, 1914, cited in Esau, 1953).

Thankyou.

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mocatmom Driftwood, TX(Zone 8b) May 07, 2009

Excellent - good info, Landscaping92.

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Landscaping92 Asheville, NC(Zone 7a) May 15, 2009

Thankyou.

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