RONALD ROTHHAAS

Emerald Ash Borer infestation continues to grow and spread

As new foliage matures on ash trees, the extent of Emerald Ash Borer infestation and increase in areal coverage is becoming obvious. Recent travels have shown widespread and rapid decline and death of ash in Hamilton County from Hyde Park...

Dry spring means early watering and mulching attention is needed

Weather conditions have been very dry this spring in the Cincinnati area. Landscapes are dry and lawns, trees, and shrubs are beginning to show stress. April so far is the sixth consecutive month with below normal rainfall. The U...

Phenology: Here comes spring...sort of

If you're tiring of the long Cincinnati winter and chomping at the bit to get those gardening gloves dirty, take heart. Meteorological spring starts March 1. How is this defined? The average temperature in March is warmer than...

Plantplaces virtual arboretum is a wealth of locally relevant horticultural information

Imagine if there was a place online which provided access to databases of plants specific to the Cincinnati area, allowing individuals to access at the click of a button photos, information, and records of local performance. Well, there is! The...

Emerald Ash Borer continues to expand across Cincinnati and Ohio

The Emerald Ash Borer continues to expand both locally and nationally. Today, the Ohio Department of Agriculture issued a press release announcing the EAB Quarantine was being expanded to 14 additional Ohio counties. During the 2009 growing season, an...

Global warming is not shifting hardiness zones

Recent articles such as one published in USA Today are suggesting that global warming is shifting plant hardiness zones northward, but the recent cold snap more likely reveals the truth. In the past week, temperatures have plummeted to -50F in...

Snow provides cold protection and moisture to landscape plants

Snow fell throughout the Cincinnati area on Thursday. This blanket of white will add insulation for plants as we head into the deep freeze, not to mention some much needed moisture. The combination of cold ground and bare soil...

Emerald Ash Borer infestation continues to grow and spread

Dry spring means early watering and mulching attention is needed

Phenology: Here comes spring...sort of

Plantplaces virtual arboretum is a wealth of locally relevant horticultural information

Emerald Ash Borer continues to expand across Cincinnati and Ohio

Global warming is not shifting hardiness zones

Snow provides cold protection and moisture to landscape plants

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