Energy is in constant debate because we as a culture and society have created our surroundings dependent of energy. Most of our housing, offices and building codes are meant to satisfy safety and personal appeal, not energy efficiency. One very effective way to harness energy is using plants, probably the most effective biological energy collector systems today. However, even plants require light and heat to propagate from seeds. A publication wrote by Dr. William Welch and produced by Extension Horticulture indicates the many reasons for starting seed indoors. For much of the country the growing season is too short to allow many annual plants that need warm soil and hot weather, such as tomatoes, peppers, petunias and salvias to mature and bear flowers or fruit if you sow them directly in the ground. Some plants produce very tiny seeds, which are easier to sow and care for indoors; begonia seeds, for example, are so fine they look almost like powder. And then there is the magic: watching a seedling push up above the soil surface creates a bond between you and nature.
Materials You Need: Containers: any shallow receptacle that holds soil, such as flats with or without individual cells, peat or paper pots, egg carton bottoms or halved milk cartons. For transplanting seedlings, 2-1/2 to 4-inch diameter plastic, clay or peat pots. To ensure even moisture for seeds – and save yourself time – look for self-watering seed-starting kits. Germinating mix: commercial or homemade. Mix your own with a 50-50 combination of fine sphagnum peat moss and vermiculite. -Seeds of annuals, perennials, vegetables, herbs.Plastic bags or plastic wrap. .Spritzer (mister). Transplanting mix: A good potting soil will do, but a mix specifically formulated for young seedlings is better. The latter usually contains a coarser grade of sphagnum peat moss than a germinating mix and often contains fertilizer.Fertilizer: balanced all-purpose fertilizer. Fertilizer labels always list the main nutrients plants need – nitrogen, phosphorus, potassium – in the same order, with numbers to indicate percentages, such as 5-10-5, 20-20-20. If you prefer to grow with organic rather than chemical fertilizers, use fish emulsion, which is very odoriferous but nutritious for plants. Plant labels. Heating cable or mat (optional)
1. Wet the germinating mix thoroughly and let it drain. It should be moist but not soggy.
2. Fill flats or individual pots with the mix to within about an inch of the top.
3. Make shallow row indentations with a ruler or your finger in the flats. It is easier to separate seedlings when transplanting time comes if you sow in rows. Sow thinly so you do not waste seed. If using pots make shallow holes and set 3 to 4 seeds in each.
4. Check to seed packet to see if the seeds need light to germinate. If they do, press them lightly into the surface. If they require darkness, cover with l/4 to l/2 inch of mix or vermiculite and tamp it down.
5. Mist the surface with water to settle the seeds.
6. Cover the flats with a sheet of plastic wrap or set them in plastic bags. Set pots in plastic bags and close with twist ties. This keeps the mix from drying out while the seeds germinate, but check the mix occasionally and moisten if necessary by spritzing with water.
7. Place the flat in a warm, bright location or in a fluorescent-light garden. Check the seed packet for specific soil temperatures for germination. Generally, seeds germinate with soil temperatures of 70-75 degrees F.
8. When the seedlings emerge, remove the plastic covering. Seed packets give you an idea of germination time, usually 7 to 10 days, sometimes as long as 2 to 3 weeks.
9. Keep the mix evenly moist, not soggy. Water from the bottom by setting flats and pots in a sink filled with a couple of inches of water; remove them when you see moisture on the surface of the mix.
The first leaves on a seedling are cotyledons, not true leaves. Their shapes usually do not look like the plants familiar leaves. When seedlings in flats grow at least two sets of true leaves, transplant them into pots.
1. Moisten the transplanting mix and let it drain. If you use an all-purpose potting soil, add a handful of vermiculite for each quart of mix to lighten the texture.
2. Fill 2-1/4 inch pots about three-quarters full.
3. Use your fingers or a pencil to pick each seedling out of the flat, carefully holding each by the leaves not the stem (plants readily grow new leaves but not broken stems).
4. Set the transplant in the pot, filling in around the roots with more mix and firming the mix down.
5. Place pots on a sunny windowsill or in a light garden.
1. Water transplants regularly from the bottom until they grow 3 to 4 inches tall. Then you can begin to water from the top, if you want.
2. Feed as you water by diluting a water-soluble fertilizer, such as fish emulsion, to half the strength recommended on the label. Or, feed at regular strength every week to 10 days.
3. You do not need to move most flowering plants into larger pots before setting them outdoors in the garden. Some vegetables, such as tomatoes, produce extensive root systems and grow quickly into lush plants; transplant them at least one more time into larger pots before the weather warms up enough to put them in the garden.
4. To encourage compact, bushy plants, occasionally pinch off the growing tips of herbs and most flowering plants.
Let There Be Light
Many seeds germinate best – more quickly and more abundantly – if you do not cover them with a mix when you sow.
1. Know the date of the average last spring frost in your area; you need to start most plants indoors a certain number of weeks before that date. Seed packets include that information. (Under Texas conditions zinnias, cosmos, sunflowers, Gomphrena,and hybrid purslane or portulaca are best sown when the weather is warmer. Putting them out into the garden too soon may cause the plants to show signs of distress.)
2. Give pots on windowsills a quarter turn every week so plants grow straight instead of bending towards the light.
3. Opt for the easiest plants to start indoors if this is your first attempt. These include basil, coreopsis, dianthus, gaillardia, gloriosa daily, marigold, oregano, yarrow and zinnia.
4. Label your seed containers as you sow.
1. Combine different varieties of seeds in one flat unless they germinate in the same number of days.
2. Let seedlings in flats grow large before you transplant them. Their roots become too entwined, making them difficult to separate without damage.
3. Start root vegetables indoors.
4. Over water seedlings. Soggy soil promotes fungus and root rot.
For more information on this or any other agricultural topic, please do not hesitate to contact the Hopkins County Extension Office at 903-885-3443 or email me at [email protected]
Mario Villarino DVM, Ph.D.
Hopkins County Extension Agent for Ag and NR
1200B Houston Street
Sulphur Springs, Texas 75482
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