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Plant Video Library 2014

Karl Foord - Extension Educator, Horticulture


Click on the link to see the video with host Dr. Mary Meyer, Professor of Horticulture



Karl Foord
Photo 1: Royal Catchfly (Silene regia)



Karl Foord
Photo 2: Wild Petunia (Ruellia humilis)



Karl Foord
Photo 3: Wild Bergamot (Monarda fistulosa)



Karl Foord
Photo 4: Tall Boneset (Eupatorium altissimum)



Karl Foord
Photo 5: Jewelweed (Impatiens capensis)

Royal Catchfly (Silene regia)

Wild Petunia (Ruellia humilis)

Wild Bergamot (Monarda fistulosa)

Tall Boneset Revised

Jewelweed Revised


Beauty is The Beast

Karl Foord - Extension Educator, Horticulture



BEFORE PROCEEDING PLEASE CLICK ON AND ENLARGE THE ABOVE IMAGE.



When I first saw this image I thought I was looking at a beautiful tapestry.


However, given the fact that Jeff Hahn was showing me a collection of pictures of insects he had assembled for a slide show presentation at the Minnesota State Fair, I had to rethink that initial impression. On closer examination one can see the head and hairs of a caterpillar. Nonetheless, what beautiful colors and such an intriguing pattern. So much for the beauty.

The only problem is that when this caterpillar has reached the large numbers characteristic of its cyclic pattern of life, it can defoliate many trees. Thus the beast.

Jeff has a video describing more aspects of the caterpillar that will be aired as part of a virtual conference sponsored by the Minnesota Turf & Grounds Foundation. We will provide a link to this presentation in the next issue of the Y&G News.




Jeff Hahn
Photo 1: Forest…

Rust fungi infect fall blooming perennials

M. Grabowski, UMN Extension
Photo 1: Asters showing lower leaf death from rust infection


M.Grabowski, UMN Extension Educator


As the summer winds down, Minnesota gardeners look to fall blooming asters like goldenrod and New England aster to bring color to the garden. In addition to colorful blossoms, less desirable colorful rust fungi can commonly be found infecting the leaves of these perennials. Many gardeners first notice rust infection when the lower leaves of an aster plant turn brown and die. In severe cases, over 50% of the leaves can be killed, often from the bottom up. Upon closer examination, a gardener will notice bright orange or chocolate brown bumps on the lower surface of green leaves and along green stems. These rust pustules are filled with hundreds of fungal spores.



M. Grabowski, UMN Extension
Photo 2: Coleosporium asterum on aster

There are several different rust fungi that infect asters in Minnesota. Infection by Coleosporium asterum results in yellow leaf spots on…

September 3 2013 Issue of Yard and Garden News

Flower Video Library for 2013 Sun Plants IV

Karl Foord - Extension Educator, Horticulture


Click on the link to see the video with host Dr. Mary Meyer, Professor of Horticulture






Karl Foord
Photo 1: Golden Showers Coreopsis (Coreopsis verticillata 'Golden Showers')



Karl Foord
Photo 2: Prickly Pear Cactus (Opuntia humifusa)



Karl Foord
Photo 3: Brown-eyed Susan (Rudbeckia triloba)

Bush Honeysuckle (Diervilla)

Golden Showers Coreopsis (Coreopsis verticillata 'Golden Showers')

Prickly Pear Cactus (Opuntia humifusa)

Brown-eyed Susan (Rudbeckia triloba)

Purple Coneflower with Aster Yellows

Ground Clematis (Clematis recta)


Flower Video Library for 2013 Sun Plants III

Karl Foord - Extension Educator, Horticulture


Click on the link to see the video with host Dr. Mary Meyer, Professor of Horticulture






Karl Foord
Photo 1: Vine Honeysuckle (Lonicera tellmanniana)



Karl Foord
Photo 2: Spiderwort (Tradescantia virginiana)



Karl Foord
Photo 3: Pale Coneflower (Echinacea pallida)



Karl Foord
Photo 4: Little Titch Catmint (Nepeta racemosa 'Little Titch')



Karl Foord
Photo 5: Creeping Phlox (Phlox subulata)

Vine Honeysuckle (Lonicera tellmanniana)

Spiderwort (Tradescantia virginiana)

Pale Coneflower (Echinacea pallida)


Little Titch Catmint (Nepeta racemosa 'Little Titch')

Clustered Bellflower (Campanula glomerata 'Joan Elliot')

Dianthus Firewitch (Dianthus gratianopolitanus 'Firewitch')

Creeping Phlox (Phlox subulata)