Archive for Gardening Green – Page 4

Portland Rain Garden with Year Round Color

Portland Rain Garden Plants with Year Round Color

Downspout disconnect rain garden in Raliegh Hills. Designed by Carol Lindsay and D & J Landscape Contracting

Downspout disconnect rain garden in Raleigh Hills. Designed by Carol Lindsay and D & J Landscape Contracting

As a Portland landscape designer I like my rain garden designs to have year round color. Many Portlanders have  rain gardens in the front yard so it’s important to have year round color.   Without careful plant selection rain garden plantings can look forlorn in the winter months with no leaves or color present.  I love a good hit of color to offset our typically gray winter season.

To select plants for a rain garden I start by thinking about the areas of a rain garden that have different degrees of wetness. There are fewer evergreen plants that work well in the wettest areas and a wider range of plants for the sides and the top which are less wet. Knowing which plants will thrive in this situation ensures I select the right plant for the right place.

Rain Garden Planting Design in Raleigh Hills, Portland, Oregon

Southwest Hills Portland Rain GardenPlantings used: Miniature Golden Sweet Flag is a 4″ tall chartreuse evergreen blade. Use the Latin name,  Acorus gramineus ‘Minimus Pusillus Aurea’, to get the right plant. The evergreen narrow gold tufts form a somewhat flattened pinwheel which adds interesting texture. It will take standing water that drains away so it’s perfect for the wettest areas of a rain garden.  If the area is a lake for a week at a time, that is too wet. Miniature Sweet Flag is unique because it also thrives in dryer sunny areas.  I don’t use it in heavy shade designs.

Flowering Tree with Beesia, Fatsia, Hosta plantings underneath

Beesia can also be used as a ground cover in partial shade here in a NE Portland landscape design.

False Bugbane – Beesia deltophylla has glossy evergreen heart shaped leaves. It’s a perfect companion plant for the narrow blades of the Miniature Gold Sweet Flag; together they make a perfect year round color  combination. The Beesia would die planted in the lowest wettest area so I plant it above the Golden Sweet Flag in a rain garden.

Designers know Compact Inkberry Holly – Ilex Glabra ‘Compacta’,  will survive temporary standing water but there are few if any other choices for the Pacific Northwest.   I’ve used Compact Inkberry Holly,  on the sides of a rain garden.  It works as a house foundation planting too. Don’t be fooled by the word “compacta”.  It will happily grow to 4′ tall. Fortunately you can prune this shrub once or twice a year and keep it 2’ by 2’.

North Portland Rain Garden Landscape Design

Ilex Glabra (Inkberry) is a great plant for rain gardens because it is evergreen. Few wet tolerant plants are evergreen. Photo from Proven Winners

Not convinced about wet soil and evergreen shrubs? I will restrain myself to listing just 5 evergreen that die a sad little death in overly wet winter soil:  Azaleas, Escollonia, Pieris, Rhododendron, and a variety of conifers to include expensive little dwarf Hemlocks.  Ouch!

Portland courtyard entry rain garden with red twig dogwood, boulders and Acorus grass

New rain garden design gets rid of the winter lake in this entry courtyard. My client built it herself.

Portland Courtyard Rain Garden Planting Design

A winter lake flooded this small entry courtyard every year for weeks at a time.  My client installed her own rock and plantings from my design but had the pipe that carried away the water installed by professionals. After the rain garden was installed we added two vine maple on either side.  The vine maple trees on either side of the rain garden would be dead instead of showing their glorious fall color.  Vine maple hate poor drainage and prove it by promptly dying.

Dwarf 16″ tall red twig dogwood “shrublets” Cornus Sericea ‘Kelseyi’ and a 12″ tall Golden Sweet Flag called Acorus gramineus ‘Aurea’ adds interest and year round color.

Get the Right Plant for Your Rain Garden

Lots of people love red  twig dogwood.  It’s a great plant for year round color and its important to get the right plant!

Some varieties of dwarf red twig dogwood get 6′ tall.  Other red twig dogwood can get 15′ tall.  Cornus sericea ‘Kelseyi’  is 12″ to 18″ tall. This dwarf dogwood variety has short colorful red twigs in winter but can get unattractive fungal leaf spots in spring.  I don’t know of a dwarf variety of red twig dogwood that is free from spring fungal leaf spots.  It’s a very useful plant.  Life is too short for spraying plants with chemicals and really dear reader, who has time to intelligently apply fungicides?

Rain garden in Willamette Heights Portland Oregon with ferns, grasses, and boulders

Dry stream bed in Willamette Heights Portland Oregon with ferns and grasses

NW Portland Hillside Rain Garden Plantings

This hillside garden was designed to be seen from the master bedroom.  There is a lot of water that moves through this hillside so it has a dry stream bed to collect the water with a drain at the bottom.  It doesn’t have any plants inside the winter water area so I don’t consider it a true rain garden.  The plants were installed behind a low retaining wall which is hidden by the plants foliage which spills over the walls. These clients are gardeners so I use a wider variety of plantings for their design than I would for non gardeners.  Ferns carry the garden for 9 months of the year. Evergreens such as native Oregon Oxalis – Oxalis organa, Japanese Soloman’s Seal Polygonatum Falcatum  (evergreen Soloman’s Seal), Hardy Geranium – Geranium Macrorrhizum  and Carex grass provide year round color.  Toad Lilly – Tricyrtis hirta, provides exotic color in the fall.  Out of all these plantings only the Carex grass can handle excessively wet winter soil. See more about this NW Portland Natural style Landscape.

North Portland Rain Garden Landscape Design

Industrial/Modern rain garden design style for downspout disconnect. Designer Barb Hilty

Portland Industrial Modern Style Rain Garden

Landscape Designer Barb Hilty designed this rain garden using no plants at all.  The full season interest relies on the ornamental rain chain, the shape of the steel boxes and the black rock to carry the day year round and allow this home owner to disconnect the downspouts in style.

Contact us

We love to work with Portland rain gardens and naturalistic dry stream beds as part of an overall design for your property.  Contact us for a collaborative approach.  The best design comes from talking at the kitchen table.

 

 

 

 

 

 

 

 

 

Winter Flowers Feed Bees

bee-id-1

Saving Bees? Feed them. Plan for flowering plants from early spring until mid-fall.    Don’t use any pesticides.  Then you don’t have to try to figure out if the claim that it won’t harm bees is true or not.

Honey Bees and Heather FarmWinter flowers feed bees.    It’s easier to provide flowers for bees in our cool early springs than you might think.  What we are learning about saving bees can be made very simple.  Feed them!  Use a diverse plant palette with flowers from early spring until mid-fall. Don’t use any pesticides and then you don’t have to try to figure out what is safe and what isn’t or who to trust.

I have always found summer easy  to provide a diverse collection of flowers for all kinds of bees but early spring requires thought and planning.   My beach house landscape on the Olympic Peninsula is a great example of a very low maintenance and bee friendly garden. The plants I list in this article are from my experiences there and from my landscape design practice here in Portland, Oregon.

Erica Darleyensis Mary Helen

Erica darleyensis ‘Mary Helen’

If you’ve read any of my blogs, heather comes up a lot.  I love to use heather in my personal landscape and for clients where we can create good drainage. By the way, I had to learn how to grow it well.  The fact that many varieties of spring heather feed bees at a critical time is a huge bonus to an already great plant.  Deer don’t bother it, and it’s a glorious and tough ground cover.  Spring heather, native plants and early flowering Spanish lavender feed bees in late winter and early spring. I start out with heather varieties that flower in late January and into early spring.  These plants Erica Carnea – spring heather not summer heather  – are especially great for our native bumble bees who are out and about earlier than honey bees.  The bumble bees can protect themselves from sudden changes in temperature by nestling down in the thick foliage if they get too cold. I’d use the word cuddle but my inner 5 year old who hated the heather at our  front walk because it was buzzing with bees . . .  won’t let me!   Heather provides a lot of nectar for the bees because of the hundreds of tiny flowers on each plant. The flowers are just the right depth for different sizes of bees.   Some tube like flowers are better for hummingbirds but the heather flower (which is a tiny little tube) is just right for bees.  Here are some early flowering spring heather varieties I like:

‘Bells Extra Special’
Foliage goes to a whiskey color with flecks of orange in the cold, the flowers are a strong purple red and best of all it’s only 4 inches high.  It spreads to about 16” wide January to May.  This short compact plant is unusual among the spring heather,  most are 6 to 8 inches high.

December Red
Clean dark green foliage with Cabernet red flowers – 8” high and spreading to 18” November to April.

Adrianne Duncan
Has a strong violet purple flower and is more compact than typical,  6” high by 18” spread.  It flowers later than Bells Extra Special.  I like to put these two together for foliage contrast.

Erica darleyensis ‘Mary Helen’
Sports an interesting gold bronze foliage in winter and lots of flower power in February to April. These plants are grown locally by Highland Heathers in Canby, Oregon.   This grower supplies retail nurseries, special plant sales such as HPSO Hortlandia spring plant sale and you can buy directly if you make an appointment. You won’t find these varieties at a big box store.  The common varieties get too big for most landscape situations and then you end up hacking at them and then they are ugly and out they go.

Three things to pay attention to for success with heathers

  1. Soil prep
  2. Proper watering
  3. Yearly Pruning

A lot of my other early spring flowering plants are Pacific NW natives.  Rubus spectabilis, Salmon Berry,  has a spectacular colorful spring flower with 75 to 100 stamens which will keep bees busy for a long time.  This flower 220px-Rubus_spectabilis_1855calls the early bumble bees by the droves.  This shrub has thorns and needs a bit of room so think first and plant second.  Our Oregon grape,  Mahonia aquifolium, my evergreen huckleberry, Vaccinium ovatum, and the hot pink red flowering current edge the light woods around the house and provide for the various local bees.   Some people don’t like Oregon grape because the leaves can get winter damage and have ratty looking leaves by early spring.  I say no problem, let them flower to provide for wildlife and then cut them down to the ground.  They will re leaf into glossy and good looking foliage for the rest of the year.

We know English lavender is great for bees in the summer.  Like heather, all lavender has hundreds of tiny flowers and is an abundant source for nectar.   Spanish lavender flowers much earlier than English lavender and provides for mid spring to early summer nectar. We need good drainage to be successful with with Spanish lavender but this often just means mounding up a few inches.   Don’t over water Spanish lavender.  I water mine once a month and am not sure it even needs that now that the plants are old.

Lavender at Joy Creek Nursery

Lavender at Joy Creek Nursery

lavandula winter bee

Lavandula stoechas ‘Winter Bee’

There is a newish variety called ‘Winter Bee’ grown by Blooming Nursery, a local wholesale grower. They claim it flowers 3 weeks earlier than other Spanish lavender and have named it accordingly,  Lavandula stoechas
‘Winter Bee’ PP #20,840.Up at my vacation house my Spanish lavender flowers in early April to mid summer.  I have seen flowers on them in March.  After the main flowering, I cut it back about 1/3rd and get another lovely hit of flowers in late summer into early fall. Here are three spring flowering Spanish lavender varieties I have grown: ‘Blueberry Ruffles‘, ‘Hazel, and ‘Mulberry Ruffle’s‘.  Blooming Nursery sells to many of the larger garden centers but don’t look for their plants at a box store; they won’t be there.

This unusual variety is compact and flowers earlier than most Spanish Lavender.

This unusual variety, ‘Mulberry Ruffles’, is compact and flowers earlier than most Spanish lavender.

Last of all, the best early flower for bees at our beach property isn’t what you would think of as a flower probably.  It has to be the huge old Oregon Big Leaf Maples down at the edge of the beach.  When they flower, the sound of bees is a low roar, I am not kidding.  My grandkids are a little nervous and tend to stay out of that area for a while.  Bees will earn respect if need be but otherwise I find them easy to get along with.  I do flinch when a bumble bee takes a dead run at me… and then I scold them for being bossy. There is enough room in the garden for everyone.

Winters come early, protect your plants

Tips for Winter Care of Drought Tolerant & Other Plants

 

Iron gate design with snow S.E. Portland OregonI recently was a guest on a radio talk show, Real Estate Today, with Gloria Hahn of the Hahn Group.  Once again it was fun, I was only a little nervous and it went well.

We talked about protecting plants from winter weather damage.  There are many kinds of damage that occur due to winter weather.  Here are a few tips to protect your plants.

Daphne care for the winter season.

Don’t let your Daphne “catch” downspout disease.

Prevent Root Rot

Be vigilant about clogged downspouts….many a Daphne has died in May because of the root rot that happened from sheets of water coming over the gutters in winter.  Don’t let your downspouts and gutters clog up. I never plant a Daphne or a shrub that is especially prone to root rot near the downspout. No one means to let them clog up but if you do not have a basement you might think you can let it wait.

Keep Bark Dust off the Centers of Plants

Applying mulch or bark dust to your planting beds in early winter is a great idea.  Mulch benefits your soil and plants and helps protects roots from cold temperatures. Bark dust helps prevent weeds.  If you have it blown in, be aware you must go out and remove the material off the crown of your plants.  I can count the number of times bark dust was applied correctly by a blow in company on one hand. They don’t pay attention to plants and especially perennials.  When the plants crown is buried it will be kept wet all winter and can die from crown rot.

It’s up to you to save your plants.  You must remove the excess product off the plants crown.  I often use a whisk broom but fingers work nicely .  I don’t apply mulch or bark dust over my fallen leaves.  I rake first and then apply 2 inches of product on my planting beds.

Echinacea 'White Swan' has winter care when dormant.

Butterflies hatch from leaves left on site.

Speaking of leaves; these days I find places in my property to pile a lot of my leaves so butterflies and other beneficial insects eggs (on the leaves) can hatch in the spring and benefit my landscape and local environment.

Don’t Prune Plants Unless They Are Dormant

Late fall or winter is not a safe time to prune most evergreen shrubs and other plants that don’t go dormant in the winter.  This can bring a plant out of dormancy or prevent it from going dormant.  This can make it vulnerable to damage or death.  When cold temps hit, if you are a plant,  it’s a good thing to be dormant and miss it all.  There are some plants that are extremely cold tolerant but many are not. Plants can’t go to Arizona for the winter.

Professionals like to prune deciduous trees and shrubs like Japanese maples (not evergreen) in December to mid January here in the Pacific Northwest.  This plant is dormant at this time, has not started to grow buds and will not “wake up” in response to pruning.  Professionals know what plants are exceptions but most homeowners do not.

Carol on a garden coach appointment pruning for winter care.

Carol Lindsay pruning non evergreen tree in winter.

Do spread a 2” layer of mulch or compost around your plants once your winter landscape is cleaned up.  You don’t want to put the compost over a bunch of decaying leaves. Mulch helps protect plant roots from extreme cold.  If you have trees whose leaves don’t drop until December, you need to wait ’til these leaves have dropped.

Drought Tolerant Plants Are Susceptible to Root Rot

Most of my clients these days ask for a low water landscape design.  I mention this with regard to winter plant protection because these plants must have good drainage in the winter.  The crown or stems at the soil level are very prone to rot.  I like to mulch the crowns with minus ten crushed rock.  I place the tiny crushed rock around the plant, not over the top of the plant.  This helps roll winter water away from the plant’s crown.  It is critical to keep bark dust or mulch away from the crowns of these perennials and shrubs. Plants like Manzanita, Yucca, Phormium, Callistemon, even hens and chicks or sedums will benefit from crushed rock applied around the crown.   If you have mulch or bark dust blown in, this can have disastrous consequences for drought tolerant plants.  It is critical to keep bark dust or mulch away from the crowns of these root rot sensitive plants.

For more information on landscape design for your garden, contact me to make an appointment.

Mulching to protect our Salmon

Recently, I attended a workshop to learn more about what I can do as both a gardener and a landscape designer to help the salmon survive and to make a difference in our environment.

Salmon have to see to navigate their way home to spawn.

Salmon have to see to navigate their way home to spawn.

Restoring our watershed means remembering that all water runs downhill, and compacted bare soils don’t absorb water. Water rushes downhill, collecting debris, dirt and contaminants as it goes, polluting and muddying the water that the salmon use.  If a stream is muddy and a salmon can’t see, it won’t go into the stream, which is where they return to spawn. Personally, I like to see where I’m going, and hadn’t ever thought about how salmon navigate or their preferences. They don’t use radar to find their way home, they have to see.

So how does mulching get in the act of saving salmon? Mulching slows down the water, and improves the soil’s moisture holding capacity and it actually immobilizes and degrades pollutants. This means cleaner, less polluted water goes to streams and rivers, keeping the water clear for the salmon to see. Pretty simple huh!

New plantings at Masterson garden receive blanket of mulch.

New plantings at Masterson garden receive blanket of mulch.

Well, it is.  Mulching bare soil areas with as little as 2 inches of compost has many benefits. It supplies slow release nutrients to plants and to existing natural good fungi.  Compost improves your soil structure, creating passageways for air and water, creating a better environment for plant growth and a healthier low maintenance garden for you.

“If all the bare soils in the Portland Metropolitan area were covered with 2 inches of medium grade compost, there wouldn’t be any problem with runoff into the rivers and stream.” The Salmon can’t be saved with random acts of kindness.

Long Lasting Wood for Raised Vegetable Boxes

Raised veggie bed from juniper wood

Juniper wood in the garden.  Photo by Sustainable Northwest Wood.

I have clients who only want to build their raised vegetable planters once.  Juniper wood is a great resource for gardeners who want their raised beds to last forever. Juniper wood can last 30 to 50 years in direct contact with moist soil!

 

Why Use Juniper?
Because Juniper is a hardwood, it is insect and rot resistant, and doesn’t require any special chemical treatments, its longevity is unmatched, outlasting redwood and cedar beds by decades. Though indigenous, Juniper has become an invasive species throughout Central Oregon, threatening grassland habitat and destroying the ecosystem.

Pre-built Options
Restoration Juniper Project (video from OPB) is a company that builds lasts forever planter boxes out of Juniper wood.  It’s a triple win because:

1.  Uses strong wood from the invasive juniper species and sales of Juniper wood helps restore threatened native habitat in Central Oregon.

2.  Profits support Growing Gardens, a local non-profit, that teaches children and families how to feed themselves by building gardens and providing support during the learning process.

3.  Wood can last 50 years so you only build once.

JuniPlanter
JuniPlanterGrowing Gardens recently unveiled a DIY planter box made from Juniper, JuniPlanter. In support of the Restoration Juniper Project, they’ve designed a kit that can be built in under an hour by DIY-ers. These boxes are not inexpensive, but they are made to last. The JuniPlanter has more than one model, but as an example, one of the boxes is $450.

This is a better investment for a person who knows they are going to be gardening for a long time, rather than someone just starting out.

Build Your Own
Sustainable Northwest Wood
Finding the Juniper wood and building your own would be another option.  I talked with Ryan of Sustainable Northwest Wood (SNW) in SE Portland, Oregon. Here are two options Ryan suggested for building an 18″ high 4′ x 8′ raised bed:

1.  Make your box 18” high using three 2” x 6” (would take 9 boards).  Each board at current prices would be $10.00 each so it would cost you $102.75 for the juniper wood for one planter at 4’ wide by 8’ long. They have a corner piece you buy for $12.75 that you can cut to create your corners so you only need one.

2. This option cost more when using 6” x 6” wood.  You will need 9 boards at $28.00 each. The cost for one juniper wood planter will be $252. You won’t need a corner piece because the 6 x 6 is strong enough for corners and the whole planter is heftier and better for sitting on.

Ryan’s Construction Tips:

  • Pre-drill all holes.
  • Use stainless steel lag bolts to use for fasteners.

Designing three Landscape Design in a Days per week, raised planter boxes go in every one of my designs.  Everyone wants them! Materials we prefer to use include:

  • Corrugated sheet metal with wood supports
  • Livestock water troughs
  • Stacked rock
  • Wood
  • Recycled concrete rubble

Schedule your Landscape Design in a Day consultation today with Carol.