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  • Home
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  • Roses
    • Types of Roses
    • Easy Roses
    • Climbing Roses
    • Portland's Rose Test Garden
    • Rose Insects & Diseases
    • Pruning Roses
    • Rose Sawfly
    • Rose Bloom Balling
  • Pruning Basics 101
    • Pruning Tools
    • Winter Pruning
    • Pruning Grapes
    • Pruning Clematis
    • Prune Your Own Garden Registration
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    • Growing Seeds Outdoors
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    • Seed & Plant Catalogues
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    • Planting Know-How
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    • Watering Tips & Techniques
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    • Sheet Mulching, Lasagna Gardening
    • Cover Crops
    • Composting
    • Compost Tea
    • Houseplant Winter Care
    • Hummingbirds in Winter
    • Winterize Your Garden
    • Ponds in Winter
  • Growing Food
    • Spring Veggie Gardening
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    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
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    • Japanese Beetles
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    • Autumn Crocus
    • Bear's Breeches
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    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Dahlias
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Harry Lauder's Walking Stick
    • Heathers
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese Spurge
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oriental Poppies
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Growing Seeds Outdoors -
Direct Seeding

Amanda's Garden Consulting Company
Bush bean seedlings. Photo Amanda Jarrett

planting vegetable seeds directly in the garden
Many crops do well when their seeds are sown directly outside where they will grow.
Sowing Seeds Outdoors - Direct Seeding or Starting Indoors - Plants Suitable for Direct Seeding -
​When and How to Direct Seed​ - Cool Season Crops - Warm Season Crops - Sowing Seeds Outside - Protecting Seeds Outdoors

Sowing Seeds Outdoors 

how to sow seeds outdoors,vegetable gardening
Peas are easy peasy to start from seed.
sow seeds outdoors,Renee's Garden Seeds
Bean seeds can be sown inside or directly sown outside, after the danger of frost has past.
One of the easiest ways to figure out which seeds should be sown inside and which ones are best planted outside, is to read the seed packet. It’s one of your best resources for information and your guide for planting that specific seed. Most seed packets identifies the plant, whether it's an annual or a perennial, it's size, growth habit (vine, bush etc.), it's preferred growing conditions, maintenance, when it should be planted, whether it should be sown outside or inside, the depth and spacing of the seed at planting, and days to maturity. Westcoast Seeds and Renee Seeds, Heritage Harvest Seeds provide great planting information and a vast array of seeds. For a list of seed catalogues, click here.

sowing warm season crops outside,growing corn
Corn seeds can be started either indoors or directly planted outside.
Direct Seeding or Starting Indoors
The term ‘direct seeding’ means to sow the seeds outside in the soil where they are to grow. Some seeds can be started both inside and outside such as cucumbers, sunflowers, beans, sweet peas and corn.

Starting seeds indoors also gives you more control over their environment: temperature, soil moisture, lighting and there's no slugs, cutworms or bugs! However some plants don’t transplant well as they have tap roots that are easily damaged such as carrots, beets, turnips, parsnips and other root crops.  
 
Plants Suitable for Direct Seeding
Below is a list of plants suited to direct seed. Ones with an asterisk* can be sown earlier indoors, then hardened off and planted outside as transplants. As always, refer to the seed packet to when and how they should be planted.
*corn,*cucumbers, *beans, *squashes (zucchini, acorn, cucumbers, watermelon, cantaloupe), *peas, *broccoli, *cauliflower, *Brussels sprouts, *chard, *lettuce, *onions, shallots, chives, *celery, radishes, carrots, parsnips, dill, beets, rutabaga

​When and How to Direct Seed

growing seeds outdoors
Read seed packages to know when and how to sow specific seeds.
Check the soil temperature and moisture content before sowing seeds outside in spring. To make sure the ground is not too soggy, grab a handful and squeeze. If it drips water, delay planting until your soil no longer weeps. Another way to tell conditions are suitable, check to see if the weeds are growing. If they are, then it's a good sign that conditions are improving. Sowing seeds when the ground is too wet and soggy results in them rotting, and much disappointment. Germination rates are highest when the soil temperature is at the optimum range for that crop. Because this is so important for successful germination, crops are categorized according to their temperature preference: cool season crops and warm season crops.  

Cool and warm season crops

growing peas,growing cool season crops from seed
Dwarf Grey Sugar Heirloom can be planted as early as February.
​ Cool Season Crops
Cool season crops prefer cool temperatures and are best sown early in the season. They germinate and grow best with temperatures of 15 to about 18 degrees C (60 to 65 F). They tolerate light frosts, but fade quickly when the mercury rises. Heat promotes bolting and bitter foliage of lettuce and other cool greens, while peas fail to flower or they ripen so fast, they aren’t sweet.  Sow peas, lettuce and their chilly counterparts out as early as February in temperate climates like the Pacific Northwest.

​Cool Season Crops: arugula, broad (fava) beans, beets, broccoli, Brussels sprouts, cabbage, collards, carrots, cauliflower, celery (mild winters), chard, fennel, kale, kohlrabi, lettuce, mustard greens, onions, pak and bok choy, peas, potatoes, radishes, spinach, coriander, cilantro, garlic cloves, endive
how to grow plants from seed,when to sow warm season crops,sowing vegetable crops
Plant red runner pole beans after frost has passed.
Warm Season Crops:
Once the danger of frost has passed, plant tomatoes, cucumbers, melons, corns, beans and other warm season crops that are easily killed by frost. Quick growing hot crops such as cucumbers, melons, corns and beans can be sown outside after the danger of frost has past, however, tomatoes and peppers are best sown indoors to ensure a bountiful harvest before the weather cools and rain returns in autumn.

​Seeds need temps above 10° C, (50° F), and will rot in cold soil of 12 °C (53° F) or less. If it is too cold they won't grow, flowering is delayed or they will drop off without being pollinated, which delays fruit formation. In the Pacific Northwest, sow the seeds of warm season crops in the late April to the beginning of May. The rest of the Canada plants on the traditional planting day of Victoria Day long weekend, generally around May 24.
Warm Season Crops: bush and pole beans, celery, cucumbers, soybeans, eggplant, peanuts, corn, melons, okra, peppers, pumpkins, squash, tomato, zucchini, basil
seed tape,growing vegetables from seed in the garden
Seed tape is easy way to sow seeds especially carrots and other tiny seeds. No thinning required.
warm season crops,growing basil from seeds
Basil is a warm season crop and should be sown inside.
sow seeds outdoors,direct seeding
Some seeds can be sown directly outside, like these French fillet bush beans.
tomato flowers abort when temperatures are cool,warm season crops
Cool temperatures result in flower drop tomatoes and other warm season crops.

​Sowing Seeds Outside

pre-soak seeds,sowing vegetable seeds,direct seeding
Peas soaking overnight will speed up their germination.
Remove debris, weeds and large rocks. Add a couple of inches of compost, SeaSoil and/or well-rotted manure. Mix it in to the first 6 inches of the soil. Rake the soil smooth and break up any clumps then water well. Wait a week for everything to settle then get ready to sow some seeds. It's a good idea to pre-write the plant labels and place them in the seed packages. Water thoroughly the day before planting especially if the soil is dry. Make a furrow to the depth required with a hoe, trowel, your hand or the end of a rake handle. To speed up germination, pre-soak large seeds such as peas, beans, sweet peas, cucumbers and corn by placing them in a dish of water for a couple of hours before planting. 
To sow fine seeds, put them your palm and 'pinch' up a few seeds with your forefinger and thumb. For really small seeds add some sand or another larger seed such as a combination of carrots and radish seeds. Cover with soil according to the seed packet instructions. Firm the soil with the back of the rake, a board or your hand.
 

sowing seeds outdoors,direct sowing,companion planting
To reduce the need for thinning crowded seedlings, combine radish and carrot seeds when sowing.
planting seeds directly in the garden
Once seeds are sown, keep the soil moist. Once they have germinated, thin seedlings so the remaining ones have room to grow.
Water ever so gently, but thoroughly. You may have to water twice a day if it is hot, sunny and/or windy. Thin seedlings, once they emerge, if they are too crowded. Remove the weaker ones so the strong will survive. Check the seed packet to find the recommended distance between the plants. It's a good idea to moisten the soil first before you do the dirty deed. Either pull them out using a chopstick or pencil, or use small nail scissors to cut off them off. This method is more precise, and doesn't disturb the roots of the remaining seedlings. Firm the soil and give them a drink.

Protecting Seeds Outdoors

protect crops from birds
Many birds eat seeds, including the ones you've just sown.
It’s exciting when seeds germinate, but heartbreaking when the die overnight or they just disappear. Slimy trails are clues that snails or slugs have feasted on the tender seedlings. Severed seedlings are victims of cutworms while birds use your garden as their own personal feeder.  Birds love to feed newly planted seeds. Here are some ways to help protect them from all those hungry predators.
protect vegetables with cloches
A tunnel cloche protects plants from birds and flying insects that lay their eggs on crops.
Birds: To prevent birds from feasting on seeds, cover them with a cloche or a spun-bonded polyester floating row cover. You could use clear plastic but it doesn’t allow air and water to filter through, unlike the fabric. It also has an added advantage of providing a bit of insulation against chilly weather and provides a barrier against flying insect pests. To learn more about cloches click here.

​Other options include laying chicken wire or bird netting laid over top of the bed. Shiny things like Mylar balloons and shiny tape also deter birds. Inverted plastic milk crates over vulnerable seedlings also provide an effective barrier. ​
protect crops with floating row covers
Floating row covers stop birds from eating newly sown seeds.
Soil Insects: For bugs that live in or on the soil, there are numerous organic solutions that will not contaminate soil and crops. Diatomaceous earth is a common product used to control soft bodied insects. It’s made from fossilized remains of tiny aquatic organisms called diatoms. Composed of silica, they are sharp and dehydrate insects. Reapply according to the manufacturer’s instructions after rain or irrigation and follow all precautions – wear gloves and don’t breathe it in.
how to protect from slugs and snails
Slugs and snails: Sprinkle diatomaceous earth or crushed eggshells on top of the soil where seeds were sown and around the stems of transplants. Reapply after rain. Click here for more on controlling slugs and snails.
wireworms,orange shiny worms,insects that eat roots
Wireworms: They are easy to spot as they are bright orange and shiny. They love to feed on roots, especially grass roots, therefore when removing sod to make a new bed, wait a week. By that time they will have gone to find food elsewhere. ​
cutworms,protect seedlings from being eaten
Cutworms: After sowing seeds, apply diatomaceous earth on top of the soil and reapply when it rains. When planting transplants (starter plants), place a toothpick on each side of the stem or wrap a small strip of newspaper around its stem. It’s finicky, but it does work. ​

Check out:
  • Tomato Seedlings to Plants
  • Gardening Techniques
  • Soil Building
  • Composting
  • Compost Tea
  • Cover Crops
  • Planting Know How
  • Growing Seeds Outdoors
  • Growing Seeds Indoors
  • Taking Cuttings

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  • Home
  • About, Services, Contact
  • Ask Amanda
  • Roses
    • Types of Roses
    • Easy Roses
    • Climbing Roses
    • Portland's Rose Test Garden
    • Rose Insects & Diseases
    • Pruning Roses
    • Rose Sawfly
    • Rose Bloom Balling
  • Pruning Basics 101
    • Pruning Tools
    • Winter Pruning
    • Pruning Grapes
    • Pruning Clematis
    • Prune Your Own Garden Registration
  • Lawn Basics
    • Lawn Reno, Seed & Sod
    • Lawn Maintenance Schedule
    • Spring Lawn Care
    • Moss in Lawns
    • Lawn Alternatives
    • Lawn Grub Control
  • Mulch & Mulching
    • Living Mulches - Groundcovers
  • Propagation
    • Growing Seeds Outdoors
    • Growing Seeds Indoors
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Watering Tips & Techniques
    • Drought Gardening
    • Sheet Mulching, Lasagna Gardening
    • Cover Crops
    • Composting
    • Compost Tea
    • Houseplant Winter Care
    • Hummingbirds in Winter
    • Winterize Your Garden
    • Ponds in Winter
  • Growing Food
    • Spring Veggie Gardening
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Helping Pollinators
    • Dogwood Anthracnose
    • Viburnum Leaf Beetle
    • Dormant Oil/Lime Sulfur
    • Japanese Beetles
    • Peony Blotch/Measles
    • Slugs & Snails
    • Horsetail, the Weed
    • June Beetle
    • Powdery Mildew
    • Soil Solarization
    • Rhododendron Leaf Spot
    • Plant Rusts
    • Black Knot
  • Container Growing
    • Choosing a Container
  • Feeding Plants 101
    • Fertilizers & Ratios
    • Nutritional Deficiencies & Toxicities
    • Organic Plant Food
  • Plant of the Month
    • Spring Flowering Bulbs
    • Colourful Fall Plants
    • Abelia
    • American Sweetgum
    • Ash (Fraxinus) Trees
    • Astilbes
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Dahlias
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Harry Lauder's Walking Stick
    • Heathers
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese Spurge
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pink Dawn Bodnant Viburnum
    • Poinsettias
    • Oregon Grape Holly
    • Ornamental Kale
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Star Magnolia
    • Strawberry Tree, Pacific Madrone
    • Stewartia
    • Torch Lily, Kniphofia uvaria
    • Tree Peonies
    • Tuberous Begonias
    • Virginia Creeper
    • Weigela
    • Winterhazel, Corylopsis
    • Winter Camellia, C. sasanqua
    • Wintergreen, Gaultheria procumbens
    • Witch Hazel
    • Wood Anemones
    • Yews
  • Garden Tour Blogs
  • Monthly Flower Arrangements
  • Website Index
  • Subscribe
  • Need Help?