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Companion Plants

Companion Plants

About fifteen or so years ago, companion planting was all the rage. Numerous books were written on the subject: Don’t plant onions near beans, squash grows well with corn, etc. It was all so scientific and mind boggling! At times, it was enough to make a gardener throw in the towel in frustration!

Companion Plants

While it is true that some plants make better “marriages” together than others do, the art of companion planting doesn’t have to be complicated at all.

Companion planting can be defined in two different ways: First of all, there are those plants that enhance each other’s growth or add protection to one or the other plant by being planted together. Secondly, there are those plants that make great partners simply because they look good together. Let’s look a little into each of these concepts:

For two examples of the first definition: Plant garlic near roses. Pests such as aphids are repelled by the scent of the garlic. Native American culture that was passed along to the first settlers included the practice of planting the “Three Sisters” together: Corn, beans, and squash. In a symbiotic relationship, beans fix nitrogen in the soil, allowing it to be made available to the corn. In turn, the corn provides support and shade for the climbing vines of the beans and squash.

Herbs are a group of plants that also assist in helping their companions. One of the most classic examples of plant combinations is the pairing of tomatoes and basil. Since most herbs are aromatic, their essences attracts or repels insects, both beneficial and pests.

For a short list of what to grow and what not to grow together:

Hyssop is an herb that will attract white cabbage butterflies. It is a companion to the cole crops, and acts as a trap crop for the cabbage butterfly.

Cabbage and cole crops in general do well in the presence of onions, cucumbers, potatoes, marigolds, beets and bush beans. Interestingly, the cole family resents being planted near pole beans. Strawberries are also a bad combination with the cole crops.

Beets do well with cabbage, onions, radishes, and bush beans.

Basil is a great companion for peppers and tomatoes. Think Italian! Along with cabbage, pole beans aren’t very happy with beets or onions.

The vegetable kingdom loves lovage! It gets along well with just about everybody. About the only plant it has a “rhubarb” with is rhubarb!

Peppers will sulk in the presence of onions.

In addition to garlic, roses also do well around onions and tomatoes.

Artemisia helps to keep aphids off of roses.

Speaking of tomatoes: Don’t locate tomatoes next to corn. They feud.

Slip some chives around your apple trees, including crab apples, to deter apple scab. Other plants protected by chives are roses and carrots.

Garlic will help to prevent borers when planted around fruit trees and raspberries.

Marigolds repel many insect pests and are appreciated by most flowers and vegetables. They also act somewhat as a weed deterrent.

These are just a few of the companions and enemies of some of our commonly grown plants. There are many others, and there are many resources out there, some easy to understand, others more complicated. A good rule of thumb is experience. If you have ever grown peppers next to onions, you will have discovered that the performance of the peppers is less than spectacular. You will not be very likely to grow them together again.

The second concept of companion planting is not so much that it is for the function of a partnership as it is for the good looks in combination.

Roses are usually tops in anyone’s ornamental garden. The problem with roses is that while the tops of the plants are pretty, the bottoms of the plant can be somewhat sparse and leggy. Try to under plant roses with other plants that hide their bottoms. Lavender, catmint, and some of the taller growing dianthus are good companion plants for this purpose. For your taller growing or climbing roses, interplant with clematis. They look good together, and both will benefit from the application of rose food. Parsley is not only good looking and great for hiding the legs of roses, it also acts as a deterrent to insects.

When growing spring flowering bulbs, especially daffodils, add daylilies to the site. As the foliage of the bulbs starts to die down, the foliage of the daylilies will sprout up and hide the yellowing foliage of the bulbs.

Hostas and ferns are classics together in the shade garden. Ditto for hostas, ferns, astilbe, and Japanese Forest Grass, or Hakonechloa.

‘Silver Mound’ artemesia, with its feather-soft silver foliage, lends its naturally rounded form as a softening effect in the garden. Pair it with the exclamation points of ‘Sunny Border Blue’ veronica.

Many people plant rhododendrons, but shy away from planting other companions with them. Hostas, Dwarf mountain laurel, and ferns all make wonderful companions.

Monarda and feverfew are wonderful together. The red upright flowers of monarda blends well with the tiny, white, daisylike flowers of feverfew.

The blue of a German or bearded iris is stunning when planted with the bright orange of the Oriental poppy. Not only is the color combination spectacular, but the contrast in foliage form and color is also complementary, as well. The swordlike green of the iris pairs wonderfully with the feathery soft green foliage of the poppies.

There are many other plants that work well together. Whether grown together as beneficial partners or for artistic effect, try out a few of them. Not only will your plants thank you, but you can show off your green thumb and make your neighbors green with envy!

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The 2011 All-America Selection Winners

The 2011 All-America Selection Winners

All-America Selections are plants that have been rigorously tested in display gardens across the US. These plants are tested in different climates, soils, and growing conditions. They are then evaluated for performance. The best of the best is awarded the AAS endorsement annually. Look for these winning selections in garden centers and through mail order seed and plant retailers.

And now, sound the turmpets! Here are the 2011 AAS winners:

Gaillardia ‘Arizona Apricot’
2011 AAS Flower Award Winner

Gaillardia ‘Arizona Apricot’

Gaillardia ‘Arizona Apricot’ 2011 AAS Flower Award Winner

Gaillardia ‘Arizona Apricot’ is a new agaillardia featuring an all-new apricot color, edged in yellow. The plants are only 12 inches tall and compact, making this a great border or container flower choice. The foliage is a bright green which contrasts with the flowers quite nicely. The flowers range from 3 to 3.5 inches acrss. Bloom time is from early summer to autumn. The first flowers form in about 90 days from an indoor sowing. The plants are literally covored in blooms. Removing faded blooms will encourage a continued show.

Ornamental Kale ‘Glamour Red’
2011 AAS Cool Season Bedding Plant Award Winner

'Glamour Red' Ornamental Kale

Ornamental Kale ‘Glamour Red’ 2011 AAS Cool Season Bedding Plant Award Winner

‘Glamour Red’ is the first kale awarded the  All-America Selections award. The leaves are waxless and the colors are very intense. The leaf form is fringed and the flower head size is about 10 to 12 inches across. Average time to bloom is about 90 days from sowing. The heads will develop good color when early fall arrives and the night temps drop below 55 degrees. ‘Glamour Red’ shows good frost and disease tolerance and is sure to be a hit in the fall border or container gardens.

Salvia ‘Summer Jewel Red’
2011 AAS Bedding Plant Award Winner

Salvia ‘Summer Jewel Red’

Salvia ‘Summer Jewel Red’ 2011 AAS Bedding Plant Award Winner

Salvia ‘Summer Jewel’ is a dwarf and extremely branching plant. At full maturity, it remains about 20 inches tall. Great for the hummingbird garden, the flowers are a brilliant red color and each flower spike is covered with 1/2 inch blooms. The leaves add a dark green contrast to the intensely red blooms. Flowering isabout 50 days from sowing and the flowers hold through wind and rain. ‘Summer Jewel Red’ will add an accent of bright color to containers or gardens. Use in a grouping for dramatic impact.

Viola ‘Shangri-La Marina’
2011 AAS Cool Season Bedding Plant Award Winner

Viola ‘Shangri-La Marina’

Viola ‘Shangri-La Marina’ 2011 AAS Cool Season Bedding Plant Award Winner

For people who love their violas and pansies, this year’s winner, Viola ‘Shangri-La Marina’, offers a beautiful addition to the cool season border and containers. This viola blooms early and prolifically and sports a 6 inch mound of color with a 12 inch spread. The blooms are light blue with a dark blue face and each bloom is rimmed in white. Flowering in just 70 days from sowing, ‘Shangri-La Marina’ will provide a long season of color if sown early indoors and will also offer additional impact to fall garden displays. More resistant to frost than many others, this viola offers extended blooms during the fall and often into the following spring. Use in the garden or in containers and pots.

Pumpkin ‘Hijinks’
2011 AAS Vegetable Award Winner

Pumpkin ‘Hijinks’

Pumpkin ‘Hijinks’ 2011 AAS Vegetable Award Winner

‘Hijinks,’ is a new pumpkin with 6 to 7 pound uniformly round fruits. Great for small jack-o’-lanterns, painting, or in fall displays, this pumpkin will be a hit this fall! The vines spread to 15 feet and show great resistance to powdery mildew and high yield of fruits. ‘Hijinks’ is ready to harvest earlier than many other pumpkins, about 100 days from an indoor sowing or 85 days from transplants.

Tomato ‘Lizzano’
2011 AAS Vegetable Award Winner

Tomato ‘Lizzano’

Tomato ‘Lizzano’ 2011 AAS Vegetable Award Winner

‘Lizzano’ is an excellent cherry tomato suited to the container or hanging basket. It is a strongly growing semi-determinate tomato. Ultimate height is 16 to 20 inches with a spread of 20 inches. The fruits are small, about 1 inch in diameter, and are sweet and prolific. The fruits set continuously for extended harvests. The plants start to produce about 105 days from sowing or 63 days from transplant.

Tomato ‘Terenzo’
2011 AAS Vegetable Award Winner

Tomato ‘Terenzo’

Tomato ‘Terenzo’ 2011 AAS Vegetable Award Winne

‘Terenzo’ is a very sweet, standard sized cherry tomato with fruits of about 1-1/4 inch diameter. Its height is similar to ‘Lizzano’, about 16 to 20 inches tall. This tomato is excellent for container or hanging basket growing. It is a bushy or determinate variety and its fruits are resistant to cracking. Expect a high yield of fruit throughout the summer.