Horticultural Updates

By Margaret Bayne, OSU Extension Staff-retired, OSU Master Gardener

November 2017

Compost pile with wheelbarrow
Compost. Photo: Tiffany Woods, OSU

What does that mean?  Experts take on gardening jargon. (Gardening Tips, Kym Pokorny, OSU) http://bit.ly/2kU9JvA

A Hormonal tug-of-war helps plant roots navigate their journey through the soil.  A sophisticated mechanism that allows plant roots to quickly respond to changes in soil conditions has been identified by an international research team. (John Innes Centre via Science Daily) http://bit.ly/2hL7aH9

Podcast: How Plants Work.  Learn about the relationship of roots and fungi, ways plants defend themselves, the ‘Wiggle Test”, mulch volcanoes and more. (Dr. Linda Chalker-Scott, WSU, via the Joe Gardener Show) http://bit.ly/2x0alRN

Get expert advice on control of sneaky root weevils with beneficial nematodes. (Gardening Tips, Kym Pokorny & Robin Rosetta, OSU) http://bit.ly/2gnGTlZ

An interesting report of a DNA study,Arbuscular mycorrhizal fungal communities exposed with new DNA sequencing approach.”  (Botanical Society of America via Eurekalert!) http://bit.ly/2kUfQzS

Reducing Lyme risks from Ticks. A long-term study, in Connecticut, of managing Japanese barberry (Berberis thunbergii) shows that clearing the invasive shrub from a wooded area once can lead to a significant reduction in abundance of blacklegged ticks (Ixodes scapularis) for as long as six years. (Environmental Entomology) http://bit.ly/2igwCIC

Every child belongs in the garden!  As the saying goes, more than a seed is planted in a garden. Children can learn not just about how natural systems work in a garden—what critters and plants live where and what do they need to survive, but also about themselves.  (University of New Hampshire Extension) http://bit.ly/2wz33Es

Get this printable online publication, Bee Basics, and Introduction to our Native Bees, (USDA Forest Service and Pollinator Partnership Publication) http://bit.ly/2lPqxja

Trees showing fall color (red)
Fall Color. Photo: John Fech, University of Nebraska

Why do trees change color in the fall?  (John Fech, U of Nebraska via Gro Big Red) http://bit.ly/2gnlY2q

Can you identify a tree by its bark? (Karen Russ, HGIF, Clemson Extension) http://bit.ly/2gf9CFG

Delayed greening-By delaying the development of chlorophyll until the leaf is fully expanded and a bit tougher, some plants are maximizing the chances of successfully increasing their photosynthetic capacity over time.” (In Defense of Plants) http://bit.ly/2fAH7Wo

Ants as pollinators? (In Defense of Plants) http://bit.ly/2kT05cG

This alert from PNW Plant Disease Management-White Rust: 

Two leaves with White Rust
White Rust. Photo: John A. Greisbach, PNW Disease Management Handbook

“We are into mum season and so we want to have an eye out for white rust. This quarantined disease has been found and eradicated in several nurseries in the greater Portland, OR area off and on since 1995 and in British Columbia since 2001. Usually it is found in nurseries that ‘hold-over’ chrysanthemums from the previous growing season. “(Jay Pscheidt, Facebook)

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