… Q. What are the current recommendations for using horticultural oil to protect mature trees from insect attack? A. Spraying trees or …
Type: Plant Info
… insects eat leaves, not roots. Heavy infestations can easily be controlled with insecticides. For more information about armyworms and control measures, please send an email to …
Type: Plant Info
… Please contact Plant Information Service at (847) 835-0972 or plantinfo@chicagobotanic.org for additional information. …
Type: Plant Info
… contact Plant Information Service at (847) 835-0972 or email plantinfo@chicagobotanic.org for a positive diagnosis and if you feel chemical treatment options are warranted. …
Type: Plant Info
… month to fertilize any tree or shrub that looks like it might benefit from extra nutrition — for example, has stunted growth, has failed to fully flower or leaf out, or has undersized fruit …
Type: Plant Info
… walk outside, typically covering less than a mile and ending with a forest-based tea. Dress for the weather, as class will still be held in light to moderate snow or rain. Saturday, May …
Type: Item Detail
… are broccoli, the cabbages, and cauliflowers. Prune grapevines according to selected method. For detailed information on pruning grapevines, contact plant information at (847) 835-0972 to …
Type: Plant Info
… summer. Shortened days, cooling temperatures and autumn rains initiate the flowering cycle for fall blooming colchicums. All parts of the plant are poisonous to people and animals alike. …
Type: Garden Guide Plant
… late in the season to accommodate the luxuriant spring foliage and that provide a backdrop for the flowers in Fall. Examples include cultivars of Heuchera , Phlox paniculata , …
Type: Garden Guide Plant
… from the bare soil in fall. Deer and rabbits dislike the chemicals in the sap, but slugs, for some reason, appear resistant to the chemicals (only a problem in wet falls). Plant these …
Type: Garden Guide Plant
