Ian Robertson, Ltd.

Horticultural Tips

 


May Tips*

q       We are getting to the end of planting season in central Virginia - but you can still plant B&B and container-grown deciduous and evergreen trees and shrubs, but be sure to soak them well and continue to water weekly until established.

q       Prune trees only if removing a damaged limb.

q       Prune spring flowering  shrubs (such as Forsythia and azaleas) and vines  after they have finished blooming.

q       Fertilize spring flowering shrubs immediately after blooming.  Use an organic fertilizer, such as Plant-Tone.

q      Inspect all plants for pests and diseases.  Catching problems early makes them easier to solve.  Use organic methods whenever possible.

q      One common disease in spring is powdery mildew on Crape Myrtles.  Use summer-weight horticultural oil to control.

q      As you may have noticed, weeds are growing rampantly right now.  Do a little weeding at frequent intervals before you (and your garden) become overwhelmed.

q      Deadhead roses regularly to encourage new blooms.  Remove dead and dying stems quickly to prevent spread of disease.

* These tips are just general suggestions.  Be sure to consult your local Cooperative Extension Agent or a good book, such as The American Horticultural Society's Pruning & Training Manual for more thorough instructions.

April Tips