5 Main Types Of Plants

DC area plants and trees: How to deal with hot weather problems

As we enter into yet another hot-weather month, many readers have written to me about problems that appear to be tied to the area’s scorching heat. Here’s are some of the issues they’ve raised, as well as other problems they’ve been struggling with:

Q. On the north side of our house, we planted skimmias. Until recently, they looked great; now, the leaves are turning yellow and dropping off. The north side of the house gets lots of heat and sun in the summer. I want to transplant them to a shady area in the back before they die. Can I transplant now?

A. Skimmias, slow-growing evergreens that stay low to the ground, must be planted in shade with moist acidic soil that is high in organic material (compost). It sounds like the heat and sun may be taking a toll on your skimmias. In this climate, skimmias are susceptible to mites that suck nutrients out of the leaves and discolor them. Sunlight also bleaches the leaves.You should transplant your skimmias to a shady part of your yard. But before you dig them up, soak the plants with a hose until the roots are moist. The leaf discoloration can be treated with an insecticidal soap available in most garden centers. You could also use liquid dishwashing soap, but do not use detergents made for dishwasher use.

Q. Do you have any suggestions as to why my lilies of the valley do not bloom? They were healthy transplants, planted in the shade three seasons ago. They are spreading but have only put out three or four flower stalks. I have grown them in other locations with success. What can I do to promote blooming next spring?

A. Lily of the valley ( Convallaria majalis ) is a cool-weather perennial, native to most of the Northern Hemisphere. It is happiest in the northern United States and Canada (USDA hardiness zones 2 to 5). That is where its flowers tend to be the showiest. The Washington area is probably the southern-most point where these plants can thrive. The area’s sizzling summer heat has probably worked against your lilies, and, unfortunately, there’s not much you can do about it at this point.

Q. The lovely crape myrtle planted in my front yard about eight years ago is now about 18 feet tall. It started to lose strips of bark from the trunk and has peeled off in areas up to about six feet. The tree looks healthy except for the peeling bark. What should I do?

A. There is nothing wrong with your tree. The sloughing of the bark is a normal part of the crape myrtle’s habit. As the outside layer of bark exfoliates, the trunk becomes more ornamental.

Types Of Roses - A Full Guide - www.rosestogrow.com |

Know About Some Common and Uncommon Types of Roses

Summary: When you have an idea of some of the different types of roses in the market, you can buy ones that are most suited to your need and your interest. These plants will definitely add to your gardening experience with their beauty and their presence.

If you are an avid fan or gardening and love growing flowering plants, knowing the different types of roses will be something important to you. Roses are a hot a favorite with everyone, because of the many colors they come in. And the easiness they are to grow and their wonderful fragrance. There are many different species of roses native to different regions around the globe. They are quite a showy plant to own for many and one that is much loved by people for a lot of reasons. With more than 150 types, knowing at least 5 varieties to begin with would be a good idea.

When you want to understand the many different types, start by learning about some basic classifications. Let’s start with hybrid tea roses. When it comes to types of roses , the first thing that comes to mind is the variety of which has a long cane and a large bloom at the end of it. It is the most commonly seen variety especially in many florists’ shops. There are numerous sub varieties of this in a number of colors excepting blue and black. Veterans honor, St Patrick, Mr. Lincoln etc are some trade names of roses belonging to this variety.

One other variety you might want to know about are the floribunda roses. These were first known by the name hybrid polyanthas. With cluster blooms these plants are a hot favorite among gardeners and landscape people. There are also varieties with singular blooms and some examples of this variety include Simplicity, Angel Face, Iceberg, French Lace etc.  Another variety to learn about in types of roses is Grandifloras. These are a combination plant with traits of both hybrid tea varieties and floribunda. Examples of this variety include the Queen Elizabeth, gold medal, etc.

Many people also love another type of roses called miniature roses. These have smaller blooms, bushes and foliage. A number of these varieties are often grown in bottles or containers by people. They require some more attention but are easy to transport at all times and varieties include Autumn Splendor, Butter Cream and Cachet.

Biology of plants

The house plant expert

The standard cyclopedia of horticulture, a discussion for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists

Environmental Science

Lee's loss prevention in the process industries, hazard identification, assessment, and control