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Tag: Mike Darcy

Tips For Winterizing Plants

It can be a bit difficult to shift gears and start thinking about winterizing plants, especially after we had such a dry and warm late summer and fall here in the Pacific Northwest. Recently we have had some rain but here it is mid-November and I have not had a frost at my house. Summer blooming plants have slowed down and do not look as good as they do in the summer, but overall, there are many semi-tropical plants that are still looking quite good. I have a large Canna in a pot on my deck and it is still in bloom. The Heliotrope has flowers and Begonia ‘Bonfire’ still has enough flowers to attract hummingbirds.

Musa Basjoo - Mike DarcyOverwintering Hardy Banana

However, we all know the mild weather is not going to last forever, and so now is a good time to discuss tips for winterizing plants. Soon we will be having regular frosts and temperatures below freezing and the tropical plants will be no more and the semi-tropical plants will need to have been put to bed for the winter. The Hardy Banana (Musa basjoo) is a very vigorous grower and even with the top growth dying to the ground in the winter; it can still reach 12-15 feet in height by the end of the summer. However, getting it to bloom can be quite a challenge.

This past summer I have been to several gardens to see Musa basjoo in bloom. The flower is large and quite unusual with a brown color and then behind the flower, small bananas will appear. Musa basjoo is native to a group of islands off the coast of Japan and it is referred to there as a fiber banana. This means that even if we had weather warm enough for the bananas to mature, it would not be considered an edible banana.

To increase the chance of plants having flowers, it is probably necessary to wrap the stems to protect them from the cold. I actually did this on three of my thickest stemmed plants and the wrap kept the stems from freezing. In the spring, the banana will then begin sending out new leaves at the tip of the stem. On the three stems I selected, I cut off the tops at about the six-foot level. I used bubble wrap and tied it around the stems and then wrapped burlap over the bubble wrap to protect the stems from being burned by the sun. Burlap also makes the wrap aesthetically pleasing.

Banana - Mike Darcy

In the spring, I removed the wrapping and the bananas started sending out leaves at the six foot level and the plants grew much taller than if the stems had died to the ground. Even though the roots are considered hardy, I like to give them the added protection of a thick layer of Black Gold Garden Compost Blend and on top of that I make several layers of the banana leaves I have removed. The leaves give some additional protection from the cold and also serve the purpose of preventing the soil conditioner from blowing away. The photo of the bananas is from my garden and this is all just the growth through mid-August.

The overwintering of the Musa basjoo may seem rather extreme and if you do not care if you have flowers, cut the stems to the ground after a hard freeze, add a layer of Black Gold Garden Compost Blend and layer the leaves you have cut off and your plant should survive just fine.

Gunnera at Walt's - Mike DarcyOverwintering Gunnera

Gunnera is a spectacular plant that also likes some winter protection. Since it likes lots of moisture, add Black Gold Just Coir and mix with existing soil when planting. Coir is actually coconut pith and is a natural and renewable product with superb water retention qualities. The crown of Gunnera can be tender to cold temperatures and I cut off the huge leaves and place them over the crown for winter protection.

Other Late-Season Plants of Interest

Another plant we can easily grow here but is not common in gardens is the hardy hibiscus (Hibiscus moscheutos). I think the word ‘hibiscus’ makes people think it is the tropical plant from Southern California and Hawaii, but it is very different except for the flower. The hardy hibiscus flower has the typical hibiscus flower shape and in some cases is even larger. Many times I have seen the hardy hibiscus with flowers the size of dinner plates and they come in a variety of colors. The hardy hibiscus will die to the ground but reappear in the spring with new stems. I like to add a layer of compost similar to what I do with the hardy banana. Hardy hibiscus is a great plant for a full sun location and it tends to bloom late in the summer, usually not until August.

We should never forget the wonderful winter color some plants can provide with just the bark or stems. Paperbark maple (Acer griseum) is a great example. This tree looks nice at any time of year but once the leaves drop, the trunk and stems are exposed and it is easy to understand how it got the common name of Paperbark Maple. A bonus in addition to the bark is that the foliage turns red in the fall. I have seen Acer griseum used as a tree for street plantings and it looks nice all year and is very easy to care for.

There are probably many other gardeners that have some tender plants in pots that they like to overwinter. I have more than I should! I have had good success with a tender Podocarpus and several citrus trees in pots just by putting them on a cart with wheels and bring them into the garage on nights when temperatures are expected to go below freezing. Then during the day, once temperatures have gotten above freezing, I wheel them out into the sunlight.

Just because we do not live in a tropical climate, with some extra effort we can push the zone!

Western Native Plants for Home Gardens

Whenever I hear someone speak of native plants for home gardens, it always makes me wonder what is considered “native”. I live in Oregon, so when a gardener tells me about native plants in home gardens and elsewhere I wonder, “Is this plant from Oregon or does a plant growing in Washington or California also count as a ‘native'”? After all, nature did not draw the state boundaries. Continue reading “Western Native Plants for Home Gardens”

Flowering Plants for Great Fall Color

From mid-September through October, here in the Pacific Northwest, we have an abundance of plants for great fall color. Whether it is foliage, stems, bark or flowers, the color array is almost unbelievable. I think the reason we do not see more of these plants is that many times they reach their prime in the fall and this is not a time of year that we are generally visiting garden centers or viewing home gardens. Here are some ideas that I would like to share after recently visiting various private gardens.

Continue reading “Flowering Plants for Great Fall Color”

Iochroma ‘Royal Queen Purple’

Lochroma 'Royal Purple' - Mike Darcy
We have many pots on our deck and I always like to try some new plants each year. This year I planted Iochroma ‘Royal Queen Purple’ using Black Gold Natural & Organic Potting Soil and the results have been outstanding. In June, I started with three small plants in 4” pots and planted them all in a 14” pot. They began blooming in early July and have not stopped. The flowers are tubular and come in clusters at the end of the branches and are a deep purple. I have done some selective pruning to keep the plant from getting too tall and it has branched out nicely and is a nice compact shrub. It is in a full sun location and seems to like the heat. I doubt if it will survive the winter but regardless, it makes for a great summer blooming plant.

Cup and Saucer Vine

Cobaea scandens - Mike DarcyCobaea scandens, or Cup and Saucer Vine, is a spectacular flowering vine, and when I see one in a garden, as I did recently, I wonder why we don’t see it in gardens more often. The common name comes from the shape of the flower, which is unusual in that when it opens it is a light green color and in a few days turns to purple.

Cup and saucer vine is a very vigorous and fast growing summer vine and would be an ideal choice to quickly cover a fence or trellis. It is easy to grow from seed and should be started indoors in the spring and then set outside when the weather warms. Black Gold Seedling Mix will give the seeds a great start. It is technically a perennial but should be treated as an annual here in the Pacific Northwest and anywhere else where winters are cold. The one drawback that I can think of is that it does not bloom until later in the summer, the last part of August/first part of September. However, I think the flowers are so striking that they are worth the wait. Even better, they are pollinated by bats in the evening hours.

Late-Summer Annual Foliage Color

Rosie Sweet Potato and Coleus - Mike Darcy
Here it is, mid-September and in the Pacific Northwest, and the weather has been warm with little or no rain. This is the time to visit gardens and observe what is performing well at this time of year. Take notes so you will remember next spring what will eventually make for great late-summer annual foliage color.

At a recent garden I visited, there was a bank of sweet potato vines (both chartreuse and black) and they had completely covered the soil. The sweet potato vines in the photo were planted with several different coleus with leaf colors of chartreuse and dark burgundy. What a stunning combination this made. Soil on a slope like this in a sunny location can dry out quickly with hot weather and winds. An excellent soil amendment to add at planting time is Black Gold Just Coir. This is actually coconut coir pith and has very good water hold retention to keep plants from drying out on hot sunny and windy days. It is both a natural and organic soil amendment.

Growing Hardy Hibiscus

Hardy Hibiscus - Mike Darcy

We often think of Hibiscus as tropical plants from Hawaii and other warm weather states. While this Hibiscus can be grown there, it will not survive our winters and gardeners often plant this and treat it as an annual plant. What many gardeners do not know is that there is a winter-hardy Hibiscus (Hibiscus moscheutos). Often referred to simply as Hardy Hibiscus, these shrubby perennials will die to the ground in the winter but reappear in the late spring. There are many varieties that come in shades of white, red, pink, and rose. I have several in my garden and they are now coming into flower.(Bees love them!)

It is nice to have a big perennial blooming at this time of year. The flowers are large and showy. Plants reach about 4-feet tall, and this is an excellent time to visit garden centers to select the color you want. Winter-hardy Hibiscus are best planted in full sun and they thrive in moist soil. Feed with an OMRI Listed organic fertilizer formulated for flowers for maximum blooming!

Pistachio Hydrangea is the Winner

Hydrangea 'Pistachio' - Mike Darcy
At the recent Farwest Show (national nursery trade show held in Portland, Oregon), there was a section call “New Varieties Showcase”. New and recently introduced plants were exhibited and participants were given ballots and asked to vote for their favorite plant. The People’s Choice Award was given to Hydrangea macrophylla ‘Horwack’ Pistachio. Commonly known at the Pistachio Hydrangea, this Hydrangea has flowers that are scarlet-red and green with violet centers. The flower color changes as the bloom ages which makes a very visual interesting feature. The plant tends to be a compact grower and likes a well drained soil. To avoid summer burning of leaves and flowers, give it some protection from the hot afternoon sun and plant in a well drained soil. Black Gold Garden Compost Blend is a good amendment to maximize your soil’s potential. This would make an excellent container plant for a deck or patio.

Feeding the Late Summer Garden

Hydrangea Snow QueenNow that the spring season is over and we are already into August, I wonder “where did the summer go”? With so many things going on in the spring and early summer garden, now is certainly the time to relax a bit and enjoy the fruits of your labors. I am not suggesting you do nothing in your garden, as there is always some maintenance to do, but at this time of year the labor is not so intense. And if you follow a few late summer gardening tips you will be sure to enjoy those fruits well into the fall season. Feeding the late summer garden is a good start.

Rose Knock Out - Mike Darcy

If you have rose bushes, between now and mid-September, it is a good time to give them a final application of  rose fertilizer for the year. I particularly like to use an organic fertilizer that is slow release. A quality flower fertilizer is ideal and applying now will encourage flowering throughout the fall season. I like to cultivate the fertilizer lightly into the soil and then give the plants a thorough watering.

As I visit other gardens this season, I see more and more vegetable gardens being planted. Home vegetable gardens are cropping up in landscapes with limited space and not necessarily in what we think of as a traditional vegetable garden. Just within my immediate neighborhood there are two rather unique vegetable gardens. One is in the space that was previously a lawn and another is in a space that is directly along the road. We would probably not have seen either of these locations used for vegetables a few years ago.

Raised Bed and Street Garden 2up - Mike Darcy
LEFT: A raised bed created at a local garden center. RIGHT: An example of vegetable garden along a roadside.

Another example of a unique vegetable is one that appeared recently at a local garden center. A raised bed vegetable garden was created in a space that had formerly been part of the garden center walkway. It was made by using pavers for the sides and then filled with top soil and then amended with organic soil conditioner and organic fertilizers. This proved to be an ideal demonstration garden to show home gardeners how easy it is to make a raised bed and that one can be built over almost any type of surface, even a driveway.

Joe Harvesting - Mike Darcy
‘Joe’ harvesting cucumbers in his community garden.

For those with limited space, or perhaps limited sunlight, consider a community garden. I am amazed at the prolific community vegetable gardens that are scattered throughout the city. These community gardens have become so popular in Portland that there is almost always a waiting list for those wanting their own plot. I have a friend, ‘Joe’, that was able to get two plots at his local community garden and he has diverse plantings and reaps a prolific harvest. The other huge benefit of a community garden is that it becomes an opportunity to meet other gardeners from your neighborhood and helps as a community building tool. Most gardeners love sharing ideas and it is hard to think of anything better than growing vegetables side by side with someone of like interests. Not only can you share the harvest, but sharing ideas on what you grow and how can be a great way to pick up new ideas for your own plot and to meet a new gardener.

For vegetables that continue to produce into the fall, consider giving them a final application of an organic fertilizer formulated for vegetables.  I always like to lightly work the soil, apply the fertilizer and then water.

Janet's Vegetable Garden - Mike Darcy
Janet’s vegetable garden is example of vegetable garden cut into lawn area.

Late summer can be a stressful time for many container plants and hanging baskets. With the container being a limiting factor with regard to a plants source for fertilizer plus the constant watering required, nutrients in a container garden can easily be depleted. This is a good time to add some all-purpose organic fertilizer as this can give plants a much needed boost.

While this is just August, it is time to be thinking about a fall vegetable garden. As summer crops fade, consider the space as potential for an entirely new crop to grow and harvest in the fall and winter. If the soil has been used for a summer vegetable garden, it would be wise to amend it by adding organic matter with a product such as Black Gold Garden Compost Blend. This same time would also be an ideal opportunity to add in some  fertilizer. Then as you remove your summer vegetable plants, and the soil is prepped, you are ready to plant. As a general rule, it is best not to plant the same crop in the same location year after year. Mix things up and perhaps, where you had tomatoes, plant peas.

Always remember that gardens are meant to be enjoyed. In my own garden, while there are always many tasks that need to be done, I do like to take some time, especially in the morning, and casually walk through it. What a delight it is to see plants in the coolness of the morning, hear the birds chirping and letting my mind relax.

Community Garden - Mike Darcy
Overview of plot at a community garden.

Janet’s Lettuce Windowbox

Nerd Night Lettuce - Mike DarcyWhen I visit other gardens I am often intrigued by things I see other gardeners do. Janet Livesay, in Lake Oswego, Oregon, had a planter that fit over the railing of her deck. She used Black Gold Natural & Organic Potting Soil and planted lettuce from seed.

Since the deck is by a door to her kitchen, she could easily cut the lettuce whenever she was making a salad. She was innovative with wanting to harvest lettuce over a long period and so she also planted seeds in small nursery pots at various intervals throughout the summer. When the lettuce in the planter was past its prime, she simply replaced it with new plants. And with the planter being off the ground, she did not have to worry about slugs eating the lettuce.