The argument
Annual gardens reset to zero every spring. Sow, water, feed, harvest, clear, repeat.
Perennials accumulate. A fruit tree gives nothing in year one. Year three, a modest bowl. Year ten, 100 kg of apples for the price of pruning and a mulch ring.
That is compound interest applied to food.
Geoff Lawton says the worst mistake new landholders make is building vegetable beds before planting trees. A tomato planted late catches up. An apple tree planted late is late for fifty years.
Time is the one input you cannot replace. Perennials also build soil while they grow. Roots open the subsoil. Leaf fall feeds the mycorrhizal network. Canopies break wind, throw shade, and host birds. A garden framed by perennials needs less labour every year, not more.
What goes in first
Plant the slowest things first. The cost of delay is highest there.
Fruit trees. Apples, pears, plums, cherries. Three to eight years to real production, depending on rootstock. Standards live longer and crop heavier. Dwarfs fruit sooner and die sooner. Pick by horizon. Surround each with a fruit tree guild of complementary perennials.
Berry bushes. Blueberries, raspberries, currants, gooseberries, elderberries. Two years to establish, heavy crops by year three. A single raspberry row yields 5 to 10 kg per metre, every year, for fifteen years.
Perennial herbs and vegetables. Asparagus needs three years and then crops for twenty. Rhubarb, sorrel, walking onions, perennial kale, artichokes, good king henry. Rosemary, thyme, sage, oregano, lavender hold the structure of companion plantings and feed pollinators.
Nitrogen fixers. Plant alder, Elaeagnus, Siberian pea shrub, and lupins at the same time as the fruit trees. They are the fertility engine of any mature food forest. See nitrogen-fixing trees for the supporting cast.
The first three years
Hard years. Bare-root sticks in winter, a few leaves in spring, slow growth through summer.
You will be tempted to abandon the trees for the instant gratification of lettuce. Don't.
Young trees need three things: deep watering in dry spells, a one-metre mulch ring kept clear of grass, and protection from browsers and wind. Do that, and a tree establishes two to three times faster than one fighting turf.
On pruning. Do not shape young trees. Leaves are solar panels. Let them run. Structural cuts wait until year three or four.
On fruit. Pull the fruit off in years one and two. It feels wrong. It pays back as heavier crops once the tree is properly rooted.
Annuals between the trees
Prioritising perennials does not mean abandoning annuals. It means putting them in the gaps.
The space between young fruit trees is wide, open, sunny. Plant squash, beans, lettuce, brassicas, cover crops. Harvest in year one while the trees work underground.
The three sisters guild slots into these gaps. Corn for height, beans for nitrogen, squash for cover.
As the canopy closes, light drops. Annuals shift to shade tolerant: greens, herbs, roots. Then perennials take the floor. Plan that succession from day one. Succession planting is not only a within-season idea.