leaf spotting

Listing 1 - 10 from 139 for leaf spotting

Humidity and Houseplants
... in a dry environment will commonly suffer damage to younger leaves and to leaf tips. New leaves and leaf tips are the area of the plant with the most actively growing cells ... , fungal growth and tissue rotting may result. Plants with hairy leaves cannot be misted, for leaf spotting will likely occur as a result. Sustainable horticultural information, offered free of charge to the ...
gardenline.usask.ca

Plants Prefer Pure Water
... at risk. Water high in salts can cause leaf necrosis (speckling of the leaf), leaf burn (drying of leaf tips and margins), and in severe case, leaf drop. If water high in salts is used ... will cause a white residue to form on the leaves, which can lead to permanent leaf spotting. Solving Salt Problems One approach to these problems is to reduce the salt buildup in ...
gardenline.usask.ca More from this site

Rhododendron for Shade
... and wide, and bears an abundance of showy, vivid, pink flowers beginning in mid-April. Leaf spotting occurs when exposed to full sun. 'Weston's Pink Diamond' is a semi-evergreen shrub ...
home.earthlink.net

lilac_care
... after the vulgaris lilacs and have some very distinct fragrances, leaf shape and growth habits. They have a burnt spicy cinnamon ... Leaf Spotting and Browning Some common problems that can occur when there are very high winds in late spring and early summer is leaf spotting ... water needed. Small brown spots are one indication and total leaf browning a more advanced state. Irrigate the plants in evening ...
lilacs.freeservers.com

justgardeners.com
... Distinction Osmamthus heterophylus "Goshiki" Osmanthus bear a superficial resemblance to holly, and share a similar leaf shape and general plant habit, though they are from a different plant family. While they ... southwest, they are quite hardy and will surive sub zero temperatues. They can exhibit some leaf spotting in early spring, especially if cool and moist, but soon outgrow this as the weather ...
justgardeners.com

Leaf Diseases on Ornamental Trees and Shrubs, HYG-3044-96
... Coffey Road, Columbus, OH 43210-1087 Leaf Diseases on Ornamental Trees and Shrubs HYG-3044-96 Stephen Nameth Nancy Taylor Jim Chatfield A number of leaf spotting or blotching diseases occur on ... are of minor effect. Following are descriptions of several of the more common leaf spot and leaf blotch diseases. Frogeye Leaf Spot of Crabapple. Pathogen: Botryosphaeria obtusa This leafspot disease is a ...
ohioline.osu.edu

Vegetable Crops - pt 3
... gas, and fluctuations in temperature. Brown stains on leaves, spotting of midribs, rib discolorations and russet spotting are some of the symptoms usually associated with these disorders ... . No resistant varieties are available. Leaf Spot (fungi - Alternaria sp., Ascochyta sp., Cercospors malayensis, Phyllosticta hibiscina): There are several leaf spotting organisms which attack okra. However ...
plantpathology.tamu.edu

Entomosporium Leaf Spot of Photinia
... red tip," is the most popular photinia grown. All of these ornamentals are susceptible to leaf spotting caused by the fungus Entomosporium mespili. Other ornamentals reported to be hosts of the ... coccinea var. formosana), Indian hawthorn (Rhaphiolepis indica), and mountain ash (Sorbus sitchensis). Fig. 1. Leaf spots on photinia caused by Entomosporium mespili. (Photo by R. C. Lambe) Fig. 2. ...
www.ext.vt.edu

Iris Leaf Spot
... Tech Publication Number: 450-600, Posted May 2000 Heterosporium leaf spot, or iris leaf spot, is the most common disease of iris in ... Leaf spotting is most conspicuous on the upper half of the leaves toward the end of the season after the blooming period. Fig. 1. Leaf ... and initiate new infections. Fungal spores (Fig. 2) produced in leaf spots during the growing season are spread by splashing rain. ...
www.ext.vt.edu More from this site

Phomopsis Cane and Leaf Spot of Grape
... that often occur simultaneously. Phomopsis cane and leaf spot (caused by the fungus Phomopsis viticola) is the new name for the cane- and leaf-spotting phase of what was once known as dead ... cane and leaf spot can affect most parts of the grapevine, including canes, leaves, rachises (cluster stems), flowers, tendrils, and berries and can cause vineyard losses by: Figure 1. Spotting and cracking ...
ohioline.osu.edu

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