Michael N. Dana
Diagnosing Herbicide Injury on Garden and Landscape Plants (ID-184-W)
Purdue Extension Publication
Herbicides, when used properly, rarely cause problems on nontarget plants, but they can sometimes injure other plants. This publication examines the common causes of herbicide injury and how to avoid them.
Black Walnut Toxicity (HO-193-W)
Purdue Extension Publication
This publication discusses the source of toxicity, implications for horticulture, juglone sensitivity in plants, plants observed to be sensitive and tolerant to juglone. An illustration of a typical leaf and nut characteristics of black walnuts is included.
Spring Garden Calendar (HO-91-W)
Purdue Extension Publication
This publication provides a general guide to taking care of plants within the home, yard, lawn, and garden during the spring months.
Hotbeds and Cold Frames (HO-53-W)
Purdue Extension Publication
This publication discusses the differences between hotbed and cold frame structures for growing out-of-season plants including the recommended dimensions, operating procedures, and the fall and winter uses for both. A table is provided listing the suggested soil mixture for planting. Illustrations are given showing a typical cold frame, the cross section of a manure-heated pit hotbed, an electric hotbed with thermostat control, flue- heated beds, and the proper way to cover hotbeds and cold frames on extremely cold nights.
New Plants from Layering (HO-1-W)
Purdue Extension Publication
This publication discusses plant layering, a method by which new plants are started from existing ones. Six common types of layering are explored. They include air, simple, tip, trench, serpentine, and mound. Proper equipment for each procedure is explained, and helpful illustrations of the six types are also included.