Tags Posts tagged with "conifers"

conifers

The medium-sized pinecones of a Colorado blue spruce can be used for crafts. Photo by Ellen Barcel

By Ellen Barcel

If you decide to plant one or more conifers this spring, here’s a quick rundown of some interesting plants to consider. If you are growing a particular conifer to gather the cones for crafts, make sure you select the correct tree.

Cryptomeria cones are not really suited for crafts. Photo by Ellen Barcel

Crytomeria japonica (in the cyprus family) has mature cones that are very unusual, being small, green and roundish. The tree can grow to an enormous size. As its name suggests, it is a native of Japan.

The Leyland cypress has been advertised in recent years as a fast-growing privacy hedge or, more accurately, wall. This is a cross between the Monterey cypress and the Nootka cypress. It can reach 100 feet at maturity and can grow as much as three feet a year. If you’re looking for a quick-growing screen, this is one to consider, but they do take up a lot of space.

Arborvitae are also in the cypress family. They, too, are fast growing but not as fast as the Leyland cypress. As with many evergreen, arborvitae are very difficult to prune attractively. Depending on the species, they can grow to great heights, so read the tag carefully before buying and planting them. Then, make sure you give them enough room to spread out.

All three of the above have a feathery appearance, rather than the sharp needles so many of us associate with conifers.

Fir trees are your typical Christmas trees and include Balsam fir and Frasier fir with short, flat needles and typical pine cones. There are approximately 50 different species of fir trees, but they are not fast growers. If you’re looking for a tree that won’t quickly take over, consider a fir. Size and shape vary so research your choice to see if it’s what you want for a particular craft.

The medium-sized pinecones of a Colorado blue spruce can be used for crafts. Photo by Ellen Barcel

Pine trees grow well in acidic soil, so you’ll notice many pine trees on Long Island. There are over 100 species of pine including the eastern white pine. They have longish needles and their cones are round in shape. They don’t have the elegance, to my mind, of firs and spruce but they are quick growers and provide a high privacy screen, many losing their lower limbs as they mature. Be careful where you plant them because of their sticky sap that can get on your car if you park it in their shade.

There are a number of spruce trees you might want to consider for your garden. Dwarf Alberta spruce, a sport of the larger white spruce, is used extensively in landscaping because of its small stature and thick evergreen foliage. It can, however, on rare occasions revert to type. It’s accustomed to the cold and does well in U.S.D.A. hardiness zones 2 through 7 (Long Island is 7). It generally doesn’t produce cones.

Another spruce is the Colorado blue spruce with its beautiful bluish needles. This is an elegant, medium-sized tree and not particularly a rapid grower.

Norway spruce is a magnificent tree. The branches on mature specimens drape down gracefully. The tree, however, is enormous at maturity. One in my neighborhood dwarfed a two-story house and it was planted about 45 years ago. If you have room for this magnificent tree, then go for it, but beware of how large this one can get. It’s cones are slightly curved and about five to six inches long.

Hemlock are beautiful and fast growing evergreens, but they have a major problem. They have been attacked by woolly adelgids (the appearance of white, cottony deposits on the needles are the egg cases), to the point that few have survived without yearly spraying. Even treated they do not always survive. They do make a quick growing and beautiful privacy hedge.

The Norway spruce is an elegant tree that reaches great heights. Its cones are approximately six inches long and slightly curved. Photo by Ellen Barcel

Dawn redwood Metasequoia, is a beautiful and fascinating tree, but unfortunately is not an evergreen. Unlike most conifers, this one is deciduous, that is, it loses its needles in fall. So, during winter you have a tree as bare as your maple or oak. Considered a “living fossil” the dawn redwood was believed extinct until it was found growing in the 1940s in China.

Yews (taxus) are small trees and shrubs with unusual cones, which remind one of red berries, rather than the more typical, woody, brown-layered cones. Many birds enjoy eating the seeds. Various species of yews are native to North America, Europe and Asia. Even mature, specimens are relatively small.

Cedar are beautiful, but very large evergreen conifers. The golden deodar cedar has branches tinged with gold, while the blue Atlas cedar have the same bluish cast as the Colorado blue spruce. Cedar cones tend to be very small, but the tree itself can get quite large. They can easily spread out to 40 feet across at the base at maturity. This can be a problem for gardeners who don’t realize their mature size and plant them right up against their house. There are also weeping versions of blue cedar, which are smaller in height but really spread out to make a great specimen plant as well as living screen.

So, do your homework and select just that perfect tree for next year’s garden as well as your craft projects.

Ellen Barcel is a freelance writer and master gardener. To reach Cornell Cooperative Extension and its Master Gardener program, call 631-727-7850.

The intense red berries appearing on yews in autumn are really greatly modified cones. Photo by Ellen Barcel

By Ellen Barcel

As you plan your new garden consider adding one or more conifers. Conifers are trees that bear cones and have evergreen needles (actually modified leaves). Many are pyramidal in shape, meaning that they don’t usually grow into your utility lines. Since they are evergreen, they provide a year-round screen.

The cones contain the seeds for the next generation. Conifers include pines, cedars, cypresses, redwoods, spruces and yews. They are woody plants and, almost without exception, are evergreens. The main exception, the dawn redwood, loses its needles in autumn and sprouts new ones in the spring. Note, however, that not all evergreens are conifers (more about that in a future column).

Conifers were the dominant land plant until, evolutionary wise, they were overtaken by flowering plants. So, yes, conifers are older than flowering trees. It is thought that conifers were the main food of herbivorous dinosaurs. Today, the soft wood is used for lumber, furniture and paper. Even turpentine is made from the resin of conifers, mainly pine trees.

The cones of the golden deodar cedar come out green and mature within one growing season. Photo by Ellen Barcel

If you are unable to identify a particular tree, checking out the cones themselves may help you. For example, the cones of the golden deodar cedar are born upright on the branches and are just two inches long. The cones grow upright during the summer and fall to the ground in autumn. The cones of the Norway spruce are long, up to six or more inches long and slightly curved. The cones of some pines are short, round and stubby. Some cones don’t even look like the “typical” pinecone.

Since many people use cones for crafts, particularly around Christmas, growing conifers has another advantage: material for those wreaths and other craft projects. If this is your plan, make sure that the conifers you select will yield the type of craft material you want.

If you can’t grow a tree that has the specific cone you are looking for, crafts shops frequently carry them. For example, the tree with the largest cones is the Coulter pine. The cones can be 8 to 10 inches long and can weight four to 11 pounds (less when dried out). Since this pine’s natural environment is coastal California, this is one you need to buy from craft shops.

The woody long cones on the Norway spruce are distinctive. Photo by Ellen Barcel

Depending on the variety of the tree, cones can form and mature in just a single growing season (like the golden deodar cedar) or can take up to two or three years. Most conifers have both male and female cones on the same tree. The male cones are generally smaller and produce pollen while the female cones are larger and produce the seeds. If you’ve ever used a closed pinecone in a craft and it gradually opened only to release the seeds all over your table or floor, you’ve got a female pinecone.

Conifers rarely need pruning, except to remove dangerous branches or a double or triple leader at the top of a pyramidal tree. If the conifer you’ve selected is very feathery, it needs careful pruning or it will look terrible. Feather the cuts. As always, it’s best to know the final size of your mature plant so that it doesn’t take over. You should not have to spend a ton of time pruning back overgrown plants.

Again, I recommend the Audubon Society’s guide to the trees of the eastern U.S. as an excellent reference. They have color photos of not only the needles of each conifer but of the cones as well. Next week, an overview of some specific conifers.

Ellen Barcel is a freelance writer and master gardener. To reach Cornell Cooperative Extension and its Master Gardener program, call 631-727-7850.