Week 9 · Plants

Perennials set the calendar

Edible Landscapes

Spring is when perennial food plants reclaim the schedule. Asparagus spears push through mulch; rhubarb crowns swell; berry canes leaf out; citrus and feijoa finish flowering. Work now is observation and restraint — feed when growth shows, mulch without burying crowns, divide overcrowded clumps before heat stress.

A well-sited asparagus bed can produce for fifteen years; a feijoa hedge feeds household and neighbours if windfalls are picked daily. Temperate oceanic New Zealand favours a mix of subtropical edges in the north and cool-tolerant species in the south — adjust harvest windows to your regional climate data, not this paragraph alone.

Asparagus

Asparagus officinalis

Harvest window Sep–Dec north; later start south — stop picking to let fern rebuild
Feed Compost mulch after final harvest cut
NZ note Male-dominant crowns reduce seedling weeds

Spring perennial jobs

  1. Asparagus — pick thin, stop on time

    Harvest pencil-thick spears for six to eight weeks maximum, then allow fern to feed next year’s crop.

  2. Rhubarb — divide if crowded

    Split crowns with sharp spade when dormant or early leaf; replant with bud at soil level.

  3. Berries — tie and thin canes

    Summer-fruiting raspberries: remove spent canes; tie new ones. Autumn types fruit on current-year wood.

  4. Citrus — feed after flush

    Light complete fertiliser when new leaves harden; keep mulch off trunk collar.

Stop picking early enough that fern can rebuild the crown — greed this year costs next.

Simple spring recipe for the kitchen: steamed asparagus with lemon and butter — or blanch spears, chill, and add to a picnic plate. Rhubarb stewed with apple and a little ginger freezes well for winter crumbles.

Taonga and native plants

Harakeke, kawakawa, and other culturally significant plants have their own protocols. Learn appropriate harvest and use from trusted Māori horticulture resources and local iwi guidance — not from generic “bushcraft” summaries.

Kids in the bed

Rhubarb division is a satisfying maths lesson — count buds, measure spacing. Berry tying teaches gentle handling. Assign real jobs, not decoration.