self sufficiency, five years in
DESCRIPTION
In March of 2006, Tulsi and Norris purchased a small house on a .2 acre lot, and used permaculture principles to design their food forest, sun garden, and house renovation. They aimed to create a low-maintenance, truly sustainable habitat for 2-4 people plus wildlife, providing from the property all necessary food, heating & cooking fuel, water, and waste treatment. Join us for a reality check on what's worked and what hasn't, what seems theoretically possible for the future, and what all this means to the oxymoronic goal of a sustainable city. Many more details available at http://farmerscrub.blogspot.comTRANSCRIPT
Norris Thomlinson & Tulsi Latoski Present: Fall 2010Summer 2006
SELF SUFFICIENCYFIVE YEARS IN
March 2006
Summer 2009
More details atfarmerscrub.blogspot.com
Site Info● NE Portland, OR. Mediterranean climate, Zone 8● Slopes slightly north● Almost full sun access● Well-drained, very rocky soil● Began with almost no topsoil, nitrogen 1 ppm● Inherited 1200 ft² of asphalt driveway, and ~6350
ft² of anemic lawn● Two large seedling cherries on property line● “Little shack on the prairie” - small house in need
of some major work
Site Info – Land Area Stats
● Lot officially 50' x 175' = 8750 ft² = .2 acres● With unused parking strip 50' x 183' = 9150 ft²● House & garage & carport & porch = ~1620 ft²● Storage shed, chicken coop, wood shed, compost area =
400 ft²● Material handling zone = ~200 ft²● Side yard hang-out area = ~80 ft²● Paths = ~ 2000 ft²● Growing space + paths = ~6850 ft²● Actual growing space = ~4850 ft², non-growing=~4300 ft²
Site Info – Ecoroof
● Added 500 ft² of ecoroof in fall 2010, with 500 ft² more planned for this spring
● 400 ft² of actual growing space
● Experimenting with food production; too early to report results
1st Year: March – September 2006
● Sheet mulched grass
● Bought in 6 cubic yards of mixed soil for instant annual beds
● Planted in wood chips & large pots
● Got chickens, bees, fungi
● Observed site: sun, water, wind, traffic & use patterns
● Discussed goals & ideas
Site goals: Big picture● Self-sufficiency for 2-4 people in:
● Food - balanced paleodiet, (not 5 pounds of potatoes per day!)● Water● Heating & Cooling● Cooking● Lighting● Waste treatment
● Sustainable – really● Giving back to the land more than we take● Not dependent on civilization after establishment● No pollution (exported waste)● Create habitat – support wildlife, bees, birds, insects
Site goals: Garden● Nutritious, diverse abundance● Protein crops – nuts, eggs, and meat● Peaceful & quiet –
nature sounds● Low maintenance● Minimal digging● Urban model● Inspirational● Beautiful● Alive & vibrant
Site goals: House RenovationGoals
● Comfortable without fossil fuels & civilization
● Welcoming & inviting● End result attractive to
buyers for resale● Low maintenance –
mudrooms & outdoor shower to keep dirty people (Norris) under control
● Model for low-budget DIY techniques
Parameters● Space for 3-4 people● $25 - $30,000 budget● Mostly DIY● Meets code
Began Summer 2009Expect end Summer '11
Design process: September 2006
● Only observed 6 months before beginning food forest & site design, not full 12 months
● Permaculture principles
● Based on Edible Forest Gardens by Dave Jacke & Eric Toensmeier
● Created accurate base map, cut out tree & shrub circles to scale, and shuffled around to maximize numbers of trees & shrub spots
● Left adequate space for paths & understory sunlight
● Prioritized favorite fruit & nut trees & shrubs to fit available spots
● “Planted” tall bamboo poles to represent trees & shrubs
Yard Design Elements● Food forest
● Canopy trees● Berries● Herbaceous understory
● Sun garden (Zone 1)● Chickens● Bees● Ecoroof (came later)● Hangout areas● Material handling zone● Water integration
● Cooking & heating fuel● Summer shade for house
& hangout areas
Food forest design
Front yard
Back yard
Element: Food forest● Best fit for goals of low
maintenance, nutritious abundance, diversity, protein crops, and habitat creation
● Encompasses entire food growing area except ecoroofs and zone 1 sun garden
● Most woody plants planted by spring of 2007
Element: Food forest canopy
Nuts & seeds● English Walnut● Black walnut● Chestnut● 4 filberts● 2 Yellowhorns● 2 Pea shrubs
Misc● 2 Olives
Fruits● 3 Pawpaws● 2 Persimmons● 2 Chinese dogwoods● 2 Plums● Cherry● Fig● Medlar● Mulberry
Element: Food forest berries● Blueberry● Goumi● Autumn Olive● Silverberry● Salal● Evergreen huck● Serviceberry● Darwinian Barberry● Goji berry● Gooseberry● Red/white/black currant● Chilean guava
● Lingonberry● Kinnick-kinnick● Rasberry● Blackberry● Japanese wineberry
Element: Food forest Vines
● Kiwis● Hardy● Fuzzy● Arctic beauty
● Maypop passionflower● Grape● Akebia● Air potato● Cinnamon Vine
Element: Food forest Herbaceous Understory
● Theoretical polyculture assigned to each tree
● Very experimental: little experience with most of the desired herbaceous plants
● N-fixers, nutrient accumulators, beneficial insectaries, aromatic pest confusers, ground covers, plus direct yields for us
Element: Sun Garden● Mostly perennial veggies:
low maintenance, soil building, habitat creation, & nutritious diversity
● Some annuals for things w/o perennial subs (tomatoes, melons, squash, etc)
● Main greens growing area● ~ 1000 ft² including paths● Circular layout w/wide
keyhole beds
Sun garden design
Element: Chickens
● Kept since summer 2006● Backyard as playground● Integrated into food forest● Fed dumpstered food● Mainly for eggs, but eat
them as they age or die● Goal to feed them onsite
Element: Bees
● Kept since spring 2006● 2 colonies each spring● Langstroth & Top Bar
hives● Minimal maintenance● Usually 1+ die each
winter● Restock w/volunteers or
captured swarms● Harvesting ~30 lbs/year
from dead colonies
Element: Food preservation● Eat fresh in season● Staggered yields● Storable foods – nuts,
seeds, honey, eggs● Solar dehydration – fruits,
berries, fungi● Wood stove dehydration –
fall crops● Fermentation● Limited canning● Root cellar● Small livestock
Element: Rainwater
● Soil primary catchment; we added ~9,000 gallons by adding 8-9” topsoil and removing driveway
● New metal roof● Ecoroofs will catch, hold,
& use some rainwater● One or two ~5000 gallon
water tanks● Mulch to conserve water● Perennial plants
Element: Rainwater● Little implemented so far● Sunspace ecoroof drains
fill 3 backyard bath tubs, ~150 gallons storage
● Front porch drain will fill 2 55 gallon rainbarrels then ~300 gallon pond
● Carport & garage roofs will irrigate plants in hedgerow. Could fill some rainbarrels first
● 5 gal. buckets as stopgap
Element: Greywater
● Bathtub, kitchen & bathroom sinks: ~20? gallons/day into mini wetland (buried hot tub filled with gravel)
● ~50%?? overflows into buried bathtub – clean water for irrigation
● Laundry to Landscape ~30 gallons/week
Element: Aquaculture
● Very simple, no pumps/greenhouses/ etc. desired
● Aquatic plants – wapato, cattail, etc
● Aquatic floaters – duckweed & azolla for livestock
● Fish – Gambusia & goldfish for humans & livestock
Element: Fuel wood● Not based on hard
numbers, just hope● Coppice for firewood
● Black locust● Elaeagnus● Hazel● Chestnut?● Mulberry?● Paulownia new planting
● Woody prunings for rocket stove
Element: Hot water
● Not implemented● 160 ft² solar water panels● Solar pump: water into
insulated pondliner box (plywood) under house
● City water flows thru 300' of 1” PEX in tank (12 gallons storage)
● Excess thermosiphons (or pumped) into radiant floor tubing
● Wood stove can heat water
Element: House heating● Passive solar sunspace
w/thermal mass● Bathtubs add some
reflected light/heat● Minimize winter tree shade● Wood stove – should really
be a rocket stove● Lots of insulation, ~R30 avg
all around● Windows all insulated
Element: House cooling
● Summer shade, winter sun● Black locusts east side● Black walnut SW corner● Grapes on south trellis
● Ventilation● Sunspace thermal mass● Cold water through
radiant floor pipes
Element: House lighting
● Sunspace● Bathtubs add light● Windows in most rooms● Privacy window between
sunspace & bathroom● Mostly living with sun● Headlamps w/solar
battery charger● Considered light tubes,
but very expensive
Mistakes, Problems, & Adjustments
Design mistakes● Not designing rotating
chicken paddocks
● No ducks
● Omitting nursery area
● Omitting secure material handling zone
● Pawpaws in driveway
● N-fixers not necessary
● Planting garlic w/drought intolerant plants
● Assumed cold winter east wind
Problems● SLUGS
● Mushroom logs dried out
● Nettles overwhelmed Ribes
● Raspberry die off
● Kiwi establshment (arctic, hardy, & fuzzy)
● Olives dead
● Yellowhorns weak
● Chilean guavas freeze
● Salal & evergreen hucks dry
● Path maintenance-depends on woodchips
● Lack of security
● Lonely for community
Adjustments● Planned for 1000s of
gallons in water tanks but:● Too much space required● Not economical after ~400
gallons per 1000 ft² roof area
● 100% gravity feed difficult● Rely on Bull Run
watershed as giant gravity fed system
● Outdoor kitchen moved● House expanded extra 2'
● Minor shrub changes● Bamboo shoehorned in● Mulberry not planted
until fall 2010● Even fewer annuals
than orig. expected● Ongoing experiments
herbaceous perennials● All new polycultures● Food balance (greens
vs roots vs berries etc)
Results: AccomplishmentsMeeting our needs
● No fossil fuels for heat (but most wood imported)● Minimal gas for cooking (rocket stove would
eliminate natural gas dependency)● No need for sewer● Garden goes til June w/o needing imported water● 675 calories, 40 mins maintenance & harvest per
day● Should scale well as fruit & nut trees begin bearing● Ducks will add low-maint. high-efficiency calories● Many calories from animal products imported from off-site
Results: AccomplishmentsMeeting needs of others
● Habitat creation & support of biodiversity● More & new insects,
spiders, soil critters ● More bird activity ● More worms, richer soil● More trees & woody
growth
● Educational model – tours & classes
● Source of seeds & plants for others
Results: Food Harvest calories
27%
48%
10%
5%
4%3%2%2%
RootsAnimal productsGreensFruitBerriesSeedsFlowers & BudsOther
Results: target harvest calories12%
30%
12%
8%
25%
5%
2%1%5%
RootsAnimal productsFruitBerriesNuts & SeedsGreensOther veggiesMushroomsSquash
Results: HarvestsMeeting needs
● Greens & other veggies● Roots in winter (summer
roots scarce)● Berries (close, anyway)● Honey (but may grow
scarcer in future)● Eggs (mostly offsite feed)
Importing● Meat - ~ ½ lb/day● Milk● Fats: veggie, butter, bear ● Eggs in laying gaps● Foraged fruits & nuts
Results: Greens harvest by month● Way more greens than we
need in mid to late spring● Dwindles in summer,
especially without irrigation● Picks up again in fall● Falls off cliff w/ hard freeze● Available through winter, but
takes longer to harvest● Picking up in early spring● These #s affected by our
immersion in house projectApril
JuneAugust
OctoberDecember
FebruaryApril
0
5
10
15
20
25
Ounces greens per day
Results: Animal products calories
58%30%
12%1%
Eggs - 184 kcal per dayHoney - 95 kcal per dayChickenSquirrel & Rat
Results: Root harvest calories
45%
12%
9%
7%
7%
5%
5%
4%
6%
Jerusalem artichokeGarlicPotatoSkirretMashuaElephant garlicDandelionYaconOther
Results: Root harvest by month● Abundant from late fall til
early spring● Scarce in summer,
besides garlic in August● Potatoes comprise much
of summer harvest
AprilJune
AugustOctober
DecemberFebruary
April
0
50
100
150
200
250
300
350
400
Calories of roots per day
Results: Food preservation● Much solar dehydration
(mostly off-site fruit)● Cherries dry on tree● “Garden scrap kim chee”● Created root cellar● Freezer for bulk meat
purchases● Fridge - often “where
food goes to die”● Easier w/more ppl to eat
perishables
Results: Conditioning & cooking● We'll burn ~1.5 cords wood this
season - would need 1.5 acres to grow (!)
● House heating projects incomplete: insulation, sunspace windows, solar hot water
● Should use rocket stoves to heat & cook plus hayboxes
● Cooking J. artichokes eats wood
● Drying laundry eats wood
● Body acclimatization to cold temps helps a lot
● Run fan sometimes in summer, but not necessary
● Dress appropriately!
Results: Lighting● Haven't installed all planned windows yet
● Sunspace doesn't allow as much light into kitchen as hoped during gray winter. Does great on sunny days.
● Haven't adapted to living w/sun – still use electric lights
● Headlamps alone for
artificial light would
work
● Haven't really tested
ability of solar battery
charger to keep up
in winter
Results: Summary
Self-sufficiency
● X Food (can feed 1/3 of a person)
● X Water
● X Heating
● √ Cooling
● X Cooking
● Lighting (close)● Waste treatment (still
generate garbage, especially from house project)
Sustainable
● √ Giving back to the land more than we take
● Not dependent on civilization after establishment (will always depend on water supply)
● No pollution (could get there by not buying packaged food)
● √ Create habitat – support wildlife, bees, birds, insects
The Future
Future theoretical possibilities
● Could maybe feed one person● Could meet heating & cooking needs by
implementing all strategies and living with whatever temperature is possible – 50s?
● Could meet all other goals except water self sufficiency
Future yields● Fruit trees may yield
~350 lbs/year● Berries may yield
~200 lbs/year● Walnuts & filberts
may yield ~80 lbs, chestnuts 10 lbs/year
Future development: Meat
● Ducks!● Live under front porch● Free range front yard● Eat slugs
● Rabbits● Live on roof w/access to
ecoroof● Feed alfalfa, black locust,
comfrey, paulownia
● Trap or shoot squirrels● Expand chicken fodders
Future development: Seed crops
● Plant 15+ Oikos Tree Crops dwarf oaks for human & poultry acorns
● Grow more fennel
seed● Breed Good King Henry
for seed production● Experiment w/perennials
for humans or poultry● Legume seeds (favas,
peas, runner beans...)
Future development: Root crops
● Adjust seasonal balance● Cinnamon vine bulbils● Yellow asphodel● More summer potatoes
● Diversify● Develop polycultures
● Mashua & jerusalem art & chinese art. or silverweed
● Lily & chinese artichoke● Oca & lily & yellow asphodel● Oca & skirret & potato● Skirret & garlic
● Grow for poultry
Cities: Implications● If can feed one person
& fuel one house from our lot, then Portland can support ~280,000 ppl.
● Currently ~600k ppl.● So everyone needs to
do what we're doing, only do a better job of it, and kick out more than ½ the population.
● Our conclusion...
Conclusion: Let's move to Hawaii!
● No need to heat or cool● Don't even need clothes● Fill our shorts with wild
avocados instead