Northwest Tree Supplier Says Summer Most Important Time for Irrigation

Snohomish, WA: Big Trees Inc. (, tree supply and installation company servicing the greater Seattle area, is offering irrigation tips for homeowners so they can keep their trees and lawns looking good during the hot, dry summer months.

Ross Latham, owner of Big Trees Inc., said “The hot, dry days of late summer and early fall is the time when irrigation is the most important for your trees and lawn. Most people think they just turn on the sprinkler and give the faucet a half turn and walk away. There’s a little bit more to it than that.”

Latham gives the following tips for homeowners:

1. How much water do your trees and lawn really need?

Your lawn needs about an inch a week, either from rain or from your irrigation and is typically done with high volume, short duration systems.  This works fine for watering grass and small shrubs with shallow root systems.  Slow-emitting or drip irrigation systems work much better for trees that have much deeper roots.  Longer watering durations are also needed for trees with drip systems, but actually use less water.

2. What is the best time to water?


Morning.  The water will sink in rather than evaporate.  Some people think you should water at night. Why shouldn’t you do that?  Your lawn is more likely to get diseases like mold if you water at night.

3. Can you water too much?

Yes indeed, and it can cause problems.  A soggy or constantly moist tree rootball or lawn, especially when combined with warm temperatures, can lead to fungal diseases and insect pests taking hold and doing damage.  Our very wet spring has created many blight or fungi infections.

4. Can I get the cheapest water hose?


Yes, but don’t expect it to last very long, or perform very well. Hoses that cost a few dollars more are usually more flexible, have brass fittings that last longer than plastic, and will be the larger diameter and length to get the job done right.

5. There are water restrictions where I live – what should I do?

If you can’t water due to watering restrictions in your area, it’s best to let your lawn go dormant.  It will look yellow or brown, but will pop back when the rain comes. Don’t give your lawn just a little bit of water now and then during a drought – that will only stress it more.  Water the trees with drip irrigation and closely monitor the soil moisture at a 6-8” depth.  The soil should stick together when compressed, not crumble apart easily or allow you to squeeze water out of it.

Ross Latham is the owner of Big Trees Inc. (, located in Snohomish, WA, in the Seattle area. The company is one of the largest tree nurseries in the Seattle area with over 120,000 trees available in over 300 varieties. They not only can deliver young trees but also mature trees in a wide range of sizes. Some types of trees available include spring flowering, deciduous, evergreen, and privacy trees. The company also does tree transplanting including up to large trees. Their blog can be seen at