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  • Home
  • About, Services, Contact
  • Amanda's Garden Blog
  • 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
    • Hardening Off Plants
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Soil pH
    • 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
    • Fall Veggie Garden Clean-up
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Raspberries
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Cloches
    • Helping Pollinators
    • Critters in the Garden
    • Black Sooty Mould
    • Brown Marmorated Stink Bug
    • 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
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    • Choosing a Container
  • Feeding Plants 101
    • Fertilizers & Ratios
    • Nutritional Deficiencies & Toxicities
    • Organic Plant Food
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    • Colourful Fall Plants
    • Abelia
    • American Sweetgum
    • Ash (Fraxinus) Trees
    • Astilbes
    • Azaleas, Deciduous
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Catalpas
    • Chinese Windmill Palm
    • Columbine
    • Chrysanthemums
    • Crocuses
    • Dahlias
    • Dawn Redwood
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Doghobble, Leucothoe
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Elderberries, Sambucus
    • Evergreen Clematis
    • English Daisies
    • Fawn Lilies, Erythroniums
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Hardy Fuchsia
    • Harry Lauder's Walking Stick
    • Heathers
    • Heavenly Bamboo
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Hydrangeas, Mophead & Lacecap
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese spirea
    • Japanese Spurge
    • Kale, ornamental
    • Katsura Trees
    • Kousa Dogwood
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oregon Grape Holly
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pearl Bush
    • Persian Ironwood
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Photinia, Fraser
    • Poinsettias
    • Primroses
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Saucer Magnolia
    • Shrubby Cinquefoil
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Solomon's Seal
    • Star Magnolia
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    • Stewartia
    • Torch Lily, Kniphofia uvaria
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Compost Tea

Amanda's Garden Consulting Company
Invite your garden for tea - compost tea! Photo by Amanda Jarrett

Plants Love a Cup of Compost Tea

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compost tea microbes,compost tea,organic gardening,how to make compost tea,The Garden Website.com,Amanda Jarrett,Amanda's Garden Consulting,garden website
Compost tea microbes under a microscope.
​I love a good cuppa, but although I am a big advocate of orange pekoe tea, compost tea is the tea of choice for soil dwelling micro-organisms and plants.
 
This potent brew is produced from compost. It’s a process that removes all the goodies in the compost and concentrates them. The finished product is like a tonic and is applied to soil and plants. It feeds the soil, plants and even controls insects and diseases. It reduces the negative impact of synthetic pesticides, fertilizers and other chemicals improves. Soil is able to retain more moisture without becoming saturated.  It also buffers soil pH, whether it is too high or too low. It is considered a gardeners panacea as many organic gardeners can attest to.
 
It takes a couple of days to make a batch of compost tea and it should be used within 48 hours for full potency. Apply to all plants and soil, including lawns. 

Things you will need

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An aquarium pump.
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Organic black strap molasses is available at most grocery stores.
An aquarium pump, tubing, manifold and stone bubblers are available at aquarium stores. Ask for their assistance if you are unsure of how to set up the system.

​You will need an outlet to plug in the pump. It’s best to set everything up outside, in the garage or the basement. ​
  • a bucket full of water that’s been left overnight to allow it to dechlorinate 
  • 5 gallon plastic bucket
  • enough compost or good soil to half fill the bucket
  • an aquarium pump large enough to run 3 bubblers
  • several feet of plastic tubing to fit the pump and gang valve
  • a gang valve
  • 3 stone bubblers
  • black flow preventer (check valve)
  • sturdy stick or pole to stir
  • 3 tablespoons un-sulfured black strap molasses mixed with warm water
  • strainer: pantyhose, pillowcase, cheesecloth, burlap or another fine mesh

The Process

  1. Fill a bucket 1/3 to ½ of compost or good soil, but don’t pack it down.
  2. Attach the gangplank valve to the bucket rim.
  3. Slip on one end of the tubing from the pump to the gangplank valve.
  4. Cut the tube in half and insert the backflow preventer (check valve) to prevent the brew from entering the pump. 
  5. To the gangplank, attach 3 lengths of tubing long enough so they rest slightly above the bottom of the bucket.
  6. Attach a bubbler to ends of each tube.
  7. Add the water from the bucket that was sitting overnight.
  8. Fill the bucket to about 6 inches from the limb.
  9. Plug in the pump so the water rolls vigorously.
  10. Adjust the flow with the adjustable knob located on the pump.
  11. Rotate the compost with a sturdy stick a few times a day.
  12. Check on the brew often to make sure the leads are moving around freely.
  13. After 48 hours the tea is brewed and ready to strain.
  14. Turn off the pump and remove all the pumping gear.
  15. Allow the compost tea to settle.
  16. Strain the brew by pouring it in a bucket with pantyhose firmly stretched over the bucket. Make sure it is secure.
  17. Slowly pour the compost tea over the bucket.
  18. Be careful at the end when the blob of compost plops out!
  19. Allow it to drain thoroughly and do reserve the solids.
  20. Use the compost tea within 48 hours as the microbes die as long as it sits.
Install a backflow preventer from the pump to the gang valve.
The gang valve and the leads into the bucket.
The gang valve sits on the bucket rim.
A stone bubbler is placed on the end of each tube.
Stir the bubbling 'tea' occasionally with a sturdy stick.
compost tea set up,compost tea,organic gardening,how to make compost tea,The Garden Website.com,Amanda Jarrett,Amanda's Garden Consulting,garden website
The Set Up

How to Apply the COmpost Tea

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Spray plants when the sun isn't shining on them.
  • Apply it around plants with a watering can. Either use it full strength or stretch it out by diluting it 50/50.
  • To spray it on plants especially those that are weak, yellow, sickly, lack vigour or are diseased.
  • There is no need to dilute it when spraying on plants.
  • Spray the entire plant even under the foliage for complete coverage.
  • Avoid spraying plants with the compost tea when the plant is in full sun.
  • Avoid spraying plants when it is raining or going to rain as it will be washed off.
  • It is best applied in the morning for best absorption.
  • The remaining compost sludge is good stuff so don’t throw it away. Add it to garden beds and at the base of plants that need a pick-me-up. 
Check out:
  • Gardening Techniques
  • Fertilizing & Feeding Plants
  • Composting
  • Compost Tea
  • Cover Crops
  • Planting Know How
  • Growing Seeds Outdoors
  • Growing Seeds Indoors
  • Taking Cuttings

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  • Home
  • About, Services, Contact
  • Amanda's Garden Blog
  • 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
    • Hardening Off Plants
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Soil pH
    • 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
    • Fall Veggie Garden Clean-up
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Raspberries
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Cloches
    • Helping Pollinators
    • Critters in the Garden
    • Black Sooty Mould
    • Brown Marmorated Stink Bug
    • 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
    • Azaleas, Deciduous
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Catalpas
    • Chinese Windmill Palm
    • Columbine
    • Chrysanthemums
    • Crocuses
    • Dahlias
    • Dawn Redwood
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Doghobble, Leucothoe
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Elderberries, Sambucus
    • Evergreen Clematis
    • English Daisies
    • Fawn Lilies, Erythroniums
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Hardy Fuchsia
    • Harry Lauder's Walking Stick
    • Heathers
    • Heavenly Bamboo
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Hydrangeas, Mophead & Lacecap
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese spirea
    • Japanese Spurge
    • Kale, ornamental
    • Katsura Trees
    • Kousa Dogwood
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oregon Grape Holly
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pearl Bush
    • Persian Ironwood
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Photinia, Fraser
    • Poinsettias
    • Primroses
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Saucer Magnolia
    • Shrubby Cinquefoil
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Solomon's Seal
    • Star Magnolia
    • Strawberry Tree, Pacific Madrone
    • Stewartia
    • Torch Lily, Kniphofia uvaria
    • Tree Peonies
    • Tuberous Begonias
    • Variegated Wintercreeper
    • Viburnum, Pink Dawn Bodnant
    • Virginia Creeper
    • Weigela
    • Winterhazel, Corylopsis
    • Winter Camellia, C. sasanqua
    • Winter Daphne
    • Wintergreen, Gaultheria procumbens
    • Witch Hazel
    • Wood Anemones
    • Yews
  • Garden Tours & Such
    • NW Horticultural Society July Garden Tour 2024
    • Burnaby in Blooms
    • Burnaby's Century Gardens
    • South Delta Garden Club Tour 2023
    • Garden Club Events
  • Website Index
  • Subscribe
  • Need Help?
    • Gift Cards