Most people think of greenhouses as solar meaning heated and lighted by the sun. Those that rely only on energy from the sun are passive systems. Solar greenhouses are insulated to collect and store energy from the sun for use at night and during cloudy weather. In areas such as the Pacific Northwest, however, most of the light in winter is diffuse and little direct light from the sun reaches the earth because of our cloudy climate. As a result, greenhouse production in these areas will likely require the use of supplementary light and/or heat. This type of greenhouse system is often referred to as an active system.

Greenhouses can be attached to a building (house, shed, barn) or freestanding. Most commercial greenhouses are freestanding. Whichever type you choose, the best placement is such that light is captured from all directions. For an attached greenhouse, the south side of a building will be the sunniest all year. The north side is not recommended. Another factor to consider in deciding where to locate a greenhouse is wind, especially one that is freestanding.

In the areas with long periods of short gray days during winter, solar heating can be unreliable. Electric lights and alternative heating sources (e.g., electric, gas or oil) can be used during the colder months to overcome this limitation. You may also want to install a backup heating system in case of power failure.

Some experts suggest that any greenhouse from simple hoop structures to glass conservatories which grow plants in the soil can produce vegetables without artificial heat. To achieve this, all you need is to do is add a second protective layer of translucent material inside the greenhouse. This twice tempered climate in your green- house is three zones warmer than where you live. USDA climate zones are based on a 10° F spread so this means the temperature inside a greenhouse could be 15-30° F warmer, a significant difference in the cool months of spring, autumn, and winter in many areas.

Ventilation is as important as heat. Lack of proper ventilation can result in too much heat or conditions that favor mildew and disease. So a completely sealed grrenhouse is not ideal.

Greenhouse production offers a wide variety of plant choices, including those that may be grown year round and those that can be transplanted outside. Cold tolerant vegetables such as brassicas, lettuce, spinach, scallions, parsnips, beets, chard, radishes, and turnips are easily grown in a greenhouse throughout the off seasons.

Winter plants have to be planted before winter to overcome the limitation on growth caused by the cooler temperatures of winter lower levels of light. During the period of winter when there are less than 10 hours of daylight, newly sown seeds grow very slowly. Count on these crops for early spring harvest.

Warm weather crops like melons, peppers, eggplants, and tomatoes can be started early in the greenhouse for later transplanting outside or can be grown inside the greenhouse all the way to harvest. Such crops will not yield as well in winter but it is possible to get tomatoes in winter with added light and heat. For winter growth in the greenhouse look for varieties of plants grown in the South which are varieties adapted to short-day culture.

Other possibilities for greenhouse growing include herbs, specialty or delicate plants such as orchids, some types of mushrooms, bedding plants, bulbs, potted flowers and, of course, cut flowers. Organic vegetables are prime candidates for greenhouse growing. Cut flowers that can be grown successfully include bachelor’s button, calendula, carnation, chrysanthemum, gardenia, lupine, marigold, pincushion flower, poppy, snapdragon, stock, zinnias.

Whether you plant cold tolerant or heat loving plants, timing is key in greenhouse growing. Once you understand your greenhouse climate and light conditions you will be able to schedule plantings to maximize growth and harvest.

Disease is often best handled by practicing proper hygiene, cultivating strong, healthy plants which will be more resistant to disease and pests, and weeding out weak and sick ones. Diseases and pests can enter the greenhouse via insects, in soil, on plants, and on seeds so careful handling and monitoring can go a long way to prevent disease and pest infestation.

Prevention is very important in the greenhouse environment but diseases and pests will inevitably be a problem at one time or another. Pest management rather than eradication is a more realistic goal and is the basis of Integrated Pest Management (IPM). Perhaps the most important aspect of IPM for greenhouses is monitoring and understanding the life cycle and behavior of pests. This information will help you develop the most effective control strategy, and enjoy the benefits of your greenhouse.

#1 Radish

Radishes are particularly easy to grow and can be intercropped with rows of lettuce to take up a minimum amount of space! Great thing about radishes is that very few pests bother them. Choose a sunny, sheltered position in soil, well fed with organic matter. Sow the seed thinly, evenly at ½ inch below the soil’s surface with one inch of space between each. Water the soil thoroughly before sowing and after the seeds emerge water them lightly every couple days. Radishes are a great source of potassium, folic acid, magnesium and calcium, and are perfect in salad dressings or as a garnish for salads. Radishes are fast growers and should be ready to pull in several weeks.

#2  Zucchini/ Squash

Zucchini and squash do well in most climates and they need very little special attention. If you plant zucchini you’ll probably end up with way more than they can even eat!

Zucchini and squash are very low in calories but full of potassium, manganese and folate. Sow several zucchini seeds in a heap pile of composted soil a foot high and a couple feet wide. Space each heap pile approximately 3 feet apart, water them heavily every other day and wait for them to sprout in a couple weeks. They should be ready to harvest about a month later. For any early start sow the seeds singly about ½in (1.25cm) deep, in small pots and place in a temperature of 65-70F (18-21C). After germination of seeds, grow on in a well lit spot, harden off and plant out after the last spring frost when the weather is warm.

#3 Carrots

Carrots tend to be pest free and need little attention. Carrots are rich in vitamin A, antioxidants, carotene and dietary. Dig a hole less than an inch deep and plant a couple of seeds in each, and leave several inches in between holes. Thin out in stages to 4-6in (10-15cm) apart. Keep the soil moist but remember to water the carrots less as they begin to reach maturity.

#4 Spinach

A highly nutritious and easily grown crop, high in both calcium and iron. Spinach can be eaten plain, cooked, and made into a chip dip. Turn over the soil with compost and plant seeds less than an inch deep, placing them at least 4 inches apart to give room for growth. Pick young leaves regularly. Sow the soil a couple more times in the first month and keep this area well-watered.

#5 Peas

Peas are another high-yield crop, both sweet peas and sugar peas. Other than fruit flies, these guys attract very few pests. A good source of vitamins A, B and C. Cultivate the soil just prior to sowing top dress with a balanced fertilizer. Keep in mind that your soil must drain well in order for peas for flourish. Space each seed several inches apart and sow them one inch deep. Freshly planted seeds require ½ inch of water every week, while more mature plants need a full inch. Any surplus peas can be frozen very successfully.

#6 Peppers

Peppers contain nutrients like thiamin and manganese. Peppers can be stuffed with meat and rice or used in salsa and pasta, and raw in salads. Till the soil with compost and Epsom salts, this will make it rich in magnesium to help the peppers develop healthily. Peppers can be produced outside in growing bags, large pots etc. Since they grow best in warm soil, sow the seeds a foot or more apart in raised beds or containers. Water them frequently, keeping the soil moist, or they may taste bitter once harvested.

#7 Lettuce/ Baby Greens

Lettuce is one of the easiest vegetables to grow; you just have to plant the seeds, water and watch how fast it grows. Lettuce is a good source of folic acid and vitamin A, used as the main ingredient mostly in salads, but also can be stuffed with various ingredients to make a lettuce wrap or top sandwiches, hamburgers and tacos. When cultivating the soil with nutrient-rich compost, break up any chunks and remove debris. Make sure that seeds are planted between 8 and 16 inches apart and water them every morning. Avoid doing so at night because this could cause disease. Loose-leaf varieties are ready to start cutting about seven weeks after sowing.

Baby greens are simply greens that are harvested while they are still young and tender. They are true instant gratification vegetables – you’ll be harvesting your first salad in under a month! Sprinkle the seeds as thinly as possible across the soil in a 2- to 3-inch wide band. Space rows of baby greens 6 to 8 inches apart. Or plant baby greens in a pot, and cut your salad fresh every night!

#8 Onion

Rich in dietary fiber, folate and vitamin C, onion need little care – just give them plenty of water. Plow the soil a foot deep and get rid of debris. The easiest way to grow onions is from sets which are small onions. Plant sets so that the tip is showing about 5in (13cm) apart in rows 12in (30cm) apart. Or, plant the seeds a couple centimeters deep and several inches apart. Weed this area frequently but gently and provide them with about an inch of water every week.

#9 Beets

The beet (beetroot) can be peeled, steamed, and then eaten warm with butter; cooked, pickled, and then eaten cold as a condiment; or peeled, shredded raw, and then eaten as a salad.. Betanin, one of the primary nutrients in this deep red or purple vegetable, can help lower blood pressure. Clean and strengthen the seeds by soaking them in water at room temperature for a day. Plow the soil and remove any stones from the top 3 feet. Plant each seed 2in (5cm) apart, thin out to 4in (10cm) apart and water them at least once every day.

#10 Broccoli

For the most part doesn’t need a lot of special care, broccoli is easily grown vegetable that gives the best return for the space it occupies and is cropped when other green vegetables are in short supply. One row of 15ft (4.5m) will accommodate six plants to give self-sufficiency for a family of four. Sow broccoli seed in spring in a seed bed ½in (1.25cm) deep and transplant when the seedlings are about 4in (10cm) tall 2ft (60cm) apart each way.

#11 Tomatoes

There are many benefits to growing tomatoes – they’re good for you, they’re tasty, and the dollar value of the yield can be very significant. Tomatoes are rich in nutrients like niacin, potassium and phosphorous, antioxidants like lycopene, anthocyanin and carotene, and vitamins A, C and E.

Sow the seed just below the surface in a tray of peat-based compost. When the seedlings have made two pairs of true leaves prick them out into 3in (7.5cm) pots and place them in a light, warm place indoors (like windowsill). After the last danger of frost has passed, pick a spot in your garden that receives at least 6-8 hours of sunlight and test the soil’s pH level – needs to be between 6 and 7. (To decrease pH level add sulfur, to increase it add lime). Spread compost over this area and mix it with the soil. After hardening off, set tomato plants 2ft (60cm) apart in rows 3ft (90cm) apart, bush plants 3ft (90cm) apart. Water them a couple times per week. Tomatoes do need a little more attention then the other vegetables on the list. However, for the little bit attention that tomatoes do need, you get an incredible reward in the large amount of fruit that they produce. Here are a few tricks for growing tomatoes.

#12 Herbs

There are many herbs including thyme, rosemary, basil, mint, sage, chives, parsley and oregano that need very little attention and can be grown successfully in containers on a patio, balcony or terrace. Purchase some of your favorite small herb plants from your local nursery and get a container that is at least 6-12 inches deep. You can plant multiple herbs in a wide or long container or use at least a 6″ pot for individual plants and you will enjoy not only their fragrance and beauty but also their culinary benefits. Water sparingly because herbs don’t like to sit in wet soil.

If you are a little apprehensive about planting an organic garden, start slow with any of the veggies I’ve mentioned. Soon you will gain confidence and have a beautiful organic garden, complete with delicious vegetables and bragging rights!

First, organic vegetable gardening does not use any fertilizers, nutrients or pesticides. Nature is your partner here because you will be using two things to make it all work namely sunlight and water. We don’t produce these ourselves but you have to find the ideal area and provide adequate drainage.

Aside from sunlight and water, you can help the crops grow by using compost heap from leftover food, chipped bark, garden compost, leaf moulds and manure. You can mix these all together and then spread this throughout your garden.

A lot of people are grossed about by manure. You don’t have to scoop this from the toilet because this is sold in stores. If you have a dog, put on some gloves and put it there. Chickens are also great to have. Just let them roam around in the garden.

Some people use dead animals or meat products. You don’t put these in the soil but leave it for a couple of weeks in the bin because maggots will soon appear and this is what you use to help fertilize your garden.

Another helpful creature is the earthworm because it digs deep into the ground and aerates the soil bringing various minerals to the surface which also provides better drainage. This long pink colored creature also leaves casting behind that experts say is five times as rich in nitrogen phosphorous and potassium. Again, this can be purchased from the gardening store.

Organic garden is challenging since you have to deal with unwanted guests. Some of these pests include armyworms, crickets, gypsy moth caterpillars, slugs and squash bugs. Before, people used fertilizer to kill them but in an organic setting, the best weapon is the toad that is known to eat more almost every type of insect. If you have caterpillars or spiders lurking in the garden, get a bird because this is not in the toad’s diet.

In some cases, you don’t have to buy a toad or a bird from the pet store. They may come in to your home as long as you set the ideal environment for them. You can put up a bird house or a small pond. Within days, you will have some new occupants protecting your garden.

Other insect killers which you can get to do the job include the preying mantis and the ladybug because they mark their territory and eat anything that dares enter their domain.

Plants can also be used to protect your vegetables. For example, the rosemary, sage or thyme is an effective deterrent against butterflies. Marigolds on the other hand are effective against nematodes.

But despite all the flowers and creatures that nature has to offer, crop rotation is seen as the best way to keep the soil fertile. If you planted this kind of vegetable for this season, change it with another and the return to the first after this one is harvested.

The principles behind organic gardening are very simple. You just have to be practice it so you can harvest the vegetables you have planted weeks ago.

Living in harmony with nature means to enjoy the benefits of plants and take advantage of their virtues. In addition to their decorative qualities or their taste, plants offer us many surprises! Here is a short guide for gardening at home, or for working in your orchard.

Indoors

Some indoor plants are known as they purify the air in our homes. They act as filters and restore or improve the atmosphere. Among the most effective we can mention palms, ferns, the Philodendron, begonias, banana trees, the ivy, cacti, or azaleas.To maximize their effectiveness, install them in groups of three or four – in individual pots or get large trays. Mix the species and distribute them around the room: you get better results.

In the Garden

To prevent invasions of ants inside the house, plant, near the entrance, herbs such as fennel or marjoram. Lavender and mint are beneficial on this purpose.To keep mosquitoes away, you can rely on plants like lemon trees. You can combine thyme with basil leaves too. Place them on the edges of windows to prevent them from entering, or around your tables to keep them away from summer dinners.Tip: Put the plants in the sun during the day. They will spread more perfume – which multiplies their effects. Watering plants at dusk, will give you the same result.

In the Vegetable Garden

Calendula is reputed to keep insects away insects. You can sow it in the garden confidently. Mix it with carrots, cabbage, and lettuce.By growing sage, rosemary, thyme, or parsley, you keep slugs away and offer a delicate bouquet of flavors to your meals! If you want to enjoy your raspberries and chase the worms that could chew them, plant forget-me-nots nearby as they repel them.Tomatoes, cabbage, beans, or potatoes will be saved if you plant nasturtiums not far from them.

For the vegetable garden next to your house, you can choose the sunniest place, but it must be as well protected against bad weather. A source of water is necessary nearby.

In the autumn, the land must be dug at a depth of 30-40 cm. In the spring, the land is worked using a rake. The land is then divided into plots and an area must be reserved to evergreen vegetables like lettuce or horse radish.

The rest of the land will be divided, according to the vegetables you want to grow, paying attention to the temperature and the light, in the case of the plants, which need them.

Your garden must look like a piece of heaven because you are well aware that is a source of health, as you will never find in a store the fresh vegetables you grow. Besides, a garden can remove your stress, taking into consideration that plants are alive. Have you ever wondered why you feel refreshed after a trip in your grandmother’s vegetable garden? The answer may be metaphorically related to the spirit of the plants that provide beneficial energy to anybody.