Archive for Garden Tips – Page 33

Lace Bugs on the Move in Oregon

Azalea lace bug is a new pest that has decided rhododendrons are on the menu as
well as azaleas. This seems like a big problem because azalea lace bug has multiple
hatchings in a season and can do a lot of damage. The old rhododendron lace bug only hatched once a year in the Pacific Northwest.

Azalea Lace Bug damage

Rhododendron leaves showing damage from azalea lace bug

Organic Control Methods

Systemic sprays and insecticides kill bees. It’s very important to use methods that don’t harm beneficial insects.  Since drought and sun stressed plants are more susceptible, one method is to give these plants better care.  Practically speaking, I would say irrigate even your old rhododendron trees that never seem to need  a drop. Water them once a week during hot summer days as a preventative measure. Preventative methods are best.  So far this spring, out of perhaps 60 gardens, I’ve only seen one garden that didn’t have these new pests.  Preventative methods I’m recommending are building up green lace wings in your garden preferably before you have the pest or when you see that you do have it and better watering.

Using green lace wings, a beneficial insect, is another effective way to combat lace bug.  You can purchase green lace wing larvae and apply them near your affected rhododendron, the idea is to build a population of green lace wings in your garden from March Biological in Sherwood, Oregon. Ladybug Indoor Gardens in Medford, Oregon can also be reached at: 541-618-4459541-618-4459.  Please note, green lace wings are pretty, they remind me of Tinker Bell, sort of.  Using the green lace wings does work, as my associate and friend Phil Thornburg, (Winterbloom) can attest.  It took about 3 years but his plants have fully recovered and he has a nice population of the lovely green lace wings in his gardens as a bonus.  Their latin name is Chrysopididae and you can look them up on Wikipedia for more details.

OSU Azalea Lacebug PDF file imageThe chemical sprays I have seen recommended for lace bug are harmful to beneficials such as honeybees.  My recommendations are purchase and apply green lace wings and irrigate azaleas and rhododendrons weekly in the summer.   This will allow us to wait until a honeybee friendly solution to help us protect our plants is found.

Azalea lace bugs are here to stay.

For more details, download the informative Oregon State University flyer.

Five Important Garden Tips

Landscape Designer Irvington Portland Landscape Designer Carol Lindsay in M Wynton design

Carol Lindsay at Garden Designers Tour 2013 M. Wynton Design

Five Important Garden Tips You Need

Weeds and Garden Mulch

Use mulch or even bark dust initially. The first two years in your new landscape are critical for controlling weeds. While installing your new plants, the soil has probably been disturbed and this wakes up dormant seeds causing perhaps hundreds to germinate a a time. If you are DIY, cover your soil with 2″ of garden mulch. Mulch is best for your soil and plants but if you have to have low maintenance no matter what, top dress your soil yearly with a dark hemlock bark for the first two years. After you are through the worst of it start applying a garden mulch at least once a year. This mulch will feed your soil and you won’t need fertilizer. 90 percent of plants live happily and healthily with applications of garden mulch and do need commercial fertilizers. There are many exceptions to these rules: SW desert style or xeric plantings like manzanita should not be fertilized or even top dressed with garden mulch ever. Gardenias are fertilizer pigs. Edibles like tomatoes….need fertilizers to produce food.

Get rid of blackberry and ivy

Treating blackberry and ivy with Roundup at the wrong time of year (spring and early summer) is pretty much useless.  In the Pacific NW late summer and early fall is the time when blackberry and ivy are most susceptible to glysophate (Roundup) herbicide. It’s a million times more effective in late summer and early fall.

In an ideal world we would not use herbicides at all;  if you are going to use them, use them sparingly correctly, and at a seasonal time when they will be effective.  For more information see my blog:  Treating blackberry and ivy .  I want acknowledge in light of recent research and court cases, we don’t know the full extent of harm Roundup and other herbicides cause.  It’s still the most practical way to reclaim our native plant areas from the stranglehold of Himalayan black berry and English ivy.  Digging out small areas of blackberries is also effective and better for the health of  mammals and other life forms.

Learn how to water-Watering every day is not your friend

Over watering or under watering new plant material is a typical cause of plant loss. Your common sense watering will kill your plants if you don’t have the specific information for the specific plant type.  You can’t water a new tree the same way you would water your petunias.  I insist my garden coach clients have a written watering plan for the first two years of their new landscape.  I tell them how long to water and to hand check the soil to see if their efforts are successful.  Last, but not least, if you’re watering every day you are in line for losing a lot of new plant material.

Sedum s Red Carpet in winter

Colorful tough ground cover for full sun

Plant labels lie.

Trust me it’s not a conspiracy, but they write the label so that it makes sense for the entire country.  In the Northwest we have the ideal growing conditions so plants will grow taller and wider than indicated.  In addition, just because a plants mature size is 15’ tall, does not mean it will stop growing once it gets there.

Learn light requirements for your plants

It’s not so easy. Labels don’t have enough room to explain the complexities of sunlight, let alone the four different kinds of shade.    Great Plant Picks is a great information resource in many ways, and has an excellent explanation about the different kinds of shade.   There is no perfect solution, even checking the Web will get you four different suggestions for light requirements on a single plant.  This is why experienced gardeners often move plants that don’t seem to thrive in the first location they select.  Others hire designers who know these things first hand.

Carol on a garden coach appointment in Irvington neighborhood Portland Oregon

“Thank you so much for all your information today and your helpful phone call Saturday.  I was pulling out plants in my mind as I was going to sleep last night.  I can’t wait to get started!”  D’Anne Oneill

No hedge pruning unless it’s a hedge

Pruning.  My best advice is don’t let your father-in-law prune your Japanese Maple!  Do not do hedge pruning on plants that are not hedges.  Too much learning already? most of my clients don’t want to become an expert gardener anymore than I want to become a computer technician!! Most just want a healthy and attractive landscape.  In which case, hire someone else to prune for you. While I certainly advocate for hiring a garden coach (since I am one) you can learn from a local nursery, community college or someone who has trees and shrubs that don’t have a bunch of stubs on them.  We want pruning that will enhance a plant’s natural and unique shape. Better yet, contact me to see if I have a real gardener I can refer you to.  Twice a year visits or less to handle pruning will save your trees and shrubs from your good intentions.

Exotic Edible Fruits

Boost your nutrition with these exciting small fruit trees

I recently attended a lecture by Jim Gilbert, owner and plant designer of One Green World.  They grow and sell edibles tested for NW gardens.  My favorite fruit out of the entire lecture was the Pawpaw tree, Asimina Triloba.

Pawpaw (Asimina Triloba) Think of an avocado that tastes like banana, is high in protein (great for vegetarians) and is easy to grow.

Pawpaw (Asimina Triloba) Think of an avocado that tastes like banana, is high in protein (great for vegetarians) and is easy to grow.

This is a yummy fruit with high proteins and nutrients that tastes like sweet banana, but is low sugar. Since I can’t eat sugar having it taste so good was very exciting to me! Plus, you can’t buy these in a store. Pawpaws can’t be shipped since they bruise easily. “It’s not like an apple that you can just dump out into a bin” according to Jim Gilbert.  The most important advise I can give to clients is to select the best tasting and easiest to grow fruit trees.  Don’t waste the time it takes to grow a plant to a mature fruit bearing size, when you can buy that same fruit at the supermarket.

The Pawpaw is a small tree native to undergrowth forests in Appalachia. Native Americans introduced Lewis and Clark to the Pawpaw. It’s easy to grow because this naturally dense compact globe shaped tree needs little pruning. It needs afternoon shade so you can plant it near or under an existing tree. This means there is room for this tree even if you have a small yard.

It was fun to hear Jim Gilbert brag about the heavy crop of Golden Sentinel apples from his columnar patio tree. This tree stands out for it’s compact size, disease resistance and it’s flavor which is like an improved Golden Delicious. It’s versatile too, eat them fresh, use them for baking or cider. There are many apple trees that would pollinate a Golden Sentinel, but my favorite is a Callaway Crabapple. I selected this tree because it matures at 6 feet tall so should fit into even a small landscape, and flower and fruit are quite beautiful. Plus it is still disease resistant and great for fresh eating and jelly.  If your space is very limited use another columnar variety.

Crabapples are a great pollinator and great for eating.

Crabapples are a great pollinator and great for eating.

Check out this article Exotic Edibles to read more about some of the new super foods that you can grow to increase your nutrition and good health.

Big news for One Green World! Their farm outlet store is now located at 6469 SE 134th Avenue just off of Foster Road opens January 21st, 2014.

Tree Stump Art

Tree Stump Art

When tragedy struck their beloved cedar tree, the clients created a beautiful sculpture from the stump.

I first met Rick Lee and Monique O’Rielly at the Portland Home & Garden Show.  They hired me to create a design for their difficult sloped back yard.  They had a beautiful large native cedar tree and we designed the landscape to fit around the tree.  It was the focal point of the naturalistic style of the design.  Before they could install the design, their cedar tree started dropping needles and turned a sickly color; the arborist recommended removal! 

Rick and Monique were devastated but then they came up with a great idea (I wish it had been my idea).  They contacted a local wood carver named Gavin (sorry folks he moved to Idaho and I don’t have a contact for him), and he created a beautiful, flowing, carved design into the trunk of the tree. 

This required thinking ahead so when the tree was cut down they left a sizable trunk.  This allowed plenty of space for the carved design and made a large art piece for the garden.

 

Mushroom Season Dangerous to Dogs

Dog with mushrooms

Are these mushrooms poisonous? http://www.petfinder.com/dogs/dog-health/pets-poisonous-mushrooms/

Mushroom season dangerous to dogs.

While walking with a friend and her dog in late November we noticed a miniature forest of mushrooms under a large tree right next to a dog park.  My advice is to presume they are toxic even though they may well be harmless.  Pick them as soon as you see them; (make sure you are wearing gloves) bag them and put them in the garbage and not in your compost.   When they are toxic they can be deadly.  Humans can have a liver transplant but dogs cannot.  Watch closely wherever you have removed trees.  The roots will decompose and fungi will grow.

“If your dog becomes ill, and you suspect mushroom ingestion, place the vomitus and any bowel movements in a plastic bag for identification, and refrigerate the bag. Try to have the contents identified within 24 hours. Notify your veterinarian that your dog may have ingested a mushroom, so that he or she can be alert to clinical signs that may require treatment.”  http://www.petfinder.com/dogs/dog-health/pets-poisonous-mushrooms/

I’m not fond of creating blogs with scary content, but there are many people who do not know about poisonous mushrooms in their home landscape.