Irrigation tips

Hello all!  I wanted to take a moment to discuss your irrigation with you.  We have been on several jobs lately where plants seemed a little less then spectacular, and the soil felt wet.  Having an irrigation system is awesome, but while too little water is a bad thing, so is too much.  Roots need air to survive, that is why they are only in the top 18" or so of your soil.  Overwatering reduces air pore space in the soil, creating anaerobic conditions that favor root rots, fungi, and can drown out your beneficial organisms.  Only when germinating grass seed should the irrigation run every day, and even then, only long enough to get the seed damp.  Once the seed starts to show some growth, it's time to adjust.  In the heat of the summer it is good to water several days a week, depending on your soil structure.  This should be done in the early morning hours, rather than at night.  This will help reduce the time droplets sit on leaves, thereby reducing fungus.  Deep soaking watering.   That means water less frequent for longer time intervals.   This encourages deep root growth because the plants will "seek out" moisture, increasing their drought hardiness.  As temperatures coll, as they are now.  You can drop it back to one or two days a week and for less time, as less water in being removed by evaporation.  Before the freeze, you need someone to come and "winterize" your system.  This involves blowing compressed air back through to eliminate any water trapped in the system that may damage it when it freezes.  If you need assistance setting your  irrigation timer, or clock, please contact a landscape professional.  Your landscaper should be able to handle things like setting the time, and replacing parts.  Happy Watering!!


Mark Griffith is a Virginia Certified Horticulturist, ISA Certified Arborist,  and a lead designer with Nautilus Garden Designs in Hampton Roads www.nautilusgardendesigns.com

Be water-wise and Beat the heat

Hello friends! I apologize for the delay in our next installment. Lots going on this summer as we get busier, and Rachel is closer to bringing our son into the world on November 8th.

In order to help your plants beat the heat, I wanted to share some wise irrigation advice. Now this doesn't mean you need an irrigation "system" installed. You can manually irrigate your gardens. My step dad would run manifolds and multiple hoses around the yard and even had a sprinkler mounted to a telephone pole to get it to spray farther. ( I don't recommend this.)

Being water-wise should start at the design phase of your garden. Proper placement of drought resistant plants, when given the opportunity to get established, are the best way to save water. Another thing you can do to preserve water is proper mulching techniques. 2-4 inches of shredded hardwood mulch properly installed will hold water, shade the soil to keep it cooler, and suppress weed growth. Thick ground cover plants can also shade the soil lowering root zone temperatures reducing water loss. Rock is NOT recommended as a mulch as is reflects heat onto the plants, does not retain water, and is harder to keep weeds out of.

Water in the early morning hours while your plants are taking up water to make it through the day. watering later in the day has little benefit as the plants have closed their stoma to preserve water, therefore greatly reducing transpiration.
Water less frequently for longer periods of time, i.e. 3 days a week for 1 hour, as opposed to everyday for 15 minutes. The longer period gets the water deeper which encourages root growth, and therefore drought resistance.
Rain Barrels used to catch storm water attached to a soaker hose is the most efficient as you have a free water source (rain) and the low pressure soaker hose releases the water into your garden at a slow rate, encouraging that root growth.

Good Luck, and keep your garden GREEN!!

Mark Griffith is a Virginia Certified Horticulturist and a lead designer with Nautilus Garden Designs in Hampton Roads www.nautilusgardendesigns.com