Blooming Early or Blooming Late

You may have noticed, like many folks, that spring flowering plants haven't given up yet.  Plants like forsythia, lilacs and even iris are blooming this fall.  We can normally blame premature flowering on low rain fall summers followed by wet falls. However that is not the case in this year.  My theory was confirmed after talking to Dr. Rick Durham (our ornament plant specialist at UK) that this premature or late blooming is a result of a wetter and cooler October followed by a warmer and dryer November.  October set the stage for a light dormancy period which was easily broken by our beautiful November weather.  The take home message is we can't really do anything about the situation.  We should hope to see temperatures moderate back to seasonal without any sudden moves down in temperature.

As you all know this will go down as a summer to remember (or forget). Not only has the summer been unbearable lest we forget about the April cold blast that left our plant material in tatters. Our hope then was to have a normal summer so that trees and shrubs could recover their stores of carbohydrates before the onset of winter. That has likely not happened. Unfortunatley we will be dealing with the loss of old and young trees for several years to come as a result of the this most unlikely weather.

This fall you should prepare to fertilize all plant material once a killing frost has occurred. A soil sample will help deterimine what we need to apply however if that is not done 10 lbs of 10-10-10 per 1000ft2 twice this fall six weeks apart will help significantly. If you have the water resources it will only benefit if you can apply 1inch of water per week to any and all trees and shrubs.

The beginning of DRY

It seems to be hitting us a little early this year. Lawn and gardens look a lot like they would in mid to late July not the first of May. We are currently in a abnormally dry period in central Kentucky however, our neighbors in southern Kentucky are already in the middle of a drought.

For me water conservation is of the utmost importance. When watering your lawn or garden take measures to conserve water when you can. For example in the garden use soaker hoses or drip irrigation to deliver the water at the root system where the plant needs it most. Even better cover the soaker hose or drip tape with a nice layer of mulch to help keep the water in the ground.

Generally we want to deliver about an inch of water per week (when Mother Nature is not) to the lawn and landscape materials. Do this in one good soaking and not several little dribbles. The plants will benefit to a greater degree to this type of watering. I like to use spot sprinklers to deliver the water to particular plants and I use a mason jar lid sitting level under the sprinkler. When that jar lid is full you have delivered about an inch of water.

Orange Rust on Blackberries

Last week I found the first outbreak of Orange Rust in Nelson County this year. Orange Rust is a big threat to the commercial Blackberry industry in Kentucky. Nelson county has about ten acres of Blackberries planted and that is expanding yearly.

The main problem associated with Orange Rust is the fact that once the plant becomes infected with the disease it can't be healed. Orange Rust moves systemically within the plant infecting the roots, crown, stem, and foliage. The plant will become less vigorous and decline with time. It is easily recognizable this time of year due to its large orange pustules that populate the underside of the leaves. For more information on how to control Orange Rust on Blackberries visit: http://www.ca.uky.edu/agc/pubs/ho/ho15/ho15.pdf

Freeze Damage to Ornamentals

It has been eleven days since the Easter freeze and we are still in a wait and see pattern. Many plants were very successful, an example would be the Hawthornes on Stephen Foster that are in full bloom today. I received word this morning that apples may end up with a crop after all. Flowers were open yesterday and Bees were in a flurry of activity.

For most ornamental plants we need to wait and see what happens before we take action. Do not fertilize this spring that will only make the problem worse however fertilization will be important this fall. There will be some plants like Japanese Maples that will likely have stem dieback which will require heavy pruning and as I said before other plants weren't affected in the least.

For much more information on this subject see the following link: http://www.ca.uky.edu/HLA/Dunwell/KYPlantDamage2007.html