How Much Time Do You Want to Spend per Calorie?
Gardening advice usually starts with what to plant. That’s backwards.
The correct first question is: How much time are you willing to trade for food — consistently — across a year?
Once you frame it that way, gardening strategies fall into a very clear hierarchy. Not by trendiness. Not by yield per square foot. But by labor amortization — calories (or nutrition) returned per unit of ongoing human effort.
A quick note on diet:
Not everyone gardens for the same nutritional reasons. Some readers are managing blood sugar, insulin resistance, or staying keto or low-carb. That changes crop priorities. HadG is not a sugar garden. It’s a time-efficient food system, adaptable to how you eat — whether that means greens, proteins-on-the-side, or high-value produce that complements a low-carb lifestyle. (But we don’t grow bugs on purpose…)
What follows is that hierarchy, from almost no labor at all to as much time as you care to invest.
Tier 1: Perennials
Plant Once. Harvest for Years. Almost No Ongoing Labor.
Perennials are the closest thing gardening has to passive income.
They require front-loaded effort — site choice, planting, initial watering — but once established, they operate on biology instead of schedules. Deep roots. Stable soil biology. Minimal pest pressure. No annual replanting panic.
This is the lowest labor-per-calorie tier available to a home gardener.
Jerusalem Artichokes (Sunchokes)
These are perennial tubers that grow like weeds and yield like crops. Plant them once and they will return every year with essentially zero care. They tolerate poor soil, drought, cold, and neglect. From a calorie perspective, they are among the highest-return plants available to the low-effort gardener. The tradeoff is digestibility for some people, which can be mitigated by cooking methods or fermentation.
Chinese Yam (Dioscorea polystachya)
A true perennial yam that is cold-hardy and remarkably gentle on digestion. Flavor is neutral, closer to potato than sweet potato. The main tradeoff is harvest effort — tubers grow deep — which can be solved tactically by growing in bottomless barrels or deep tubes. Once established, this is a long-term calorie anchor.
Walking Onions
Perennial onions that replant themselves via topsets. They provide onion greens year-round and bulbs seasonally with no replanting. They are a classic example of a plant that trades maximum flavor and convenience for minimum effort.
Okinawa Spinach (Longevity Spinach)
A heat-loving perennial green ideal for southern climates. Cut-and-come-again harvesting, extremely forgiving, and productive during seasons when traditional spinach fails. This is a daily-harvest plant that asks almost nothing in return.
Sorrel
One of the earliest greens in spring and one of the most persistent. Deep-rooted, pest-resistant, and perennial. Sorrel provides reliable greens when motivation is low and time is short.
Perennial takeaway:
If all gardening stopped tomorrow except harvesting perennials, you would still eat.
Tier 2: Low-Effort Indoor Hydroponics
Oxygen Output, Fresh Greens, Minimal Commitment — Until You Lose Interest
Indoor hydroponics sits just above perennials in the labor hierarchy. The key advantage is predictability. The key risk is attention decay.
These systems excel at:
- Producing salads, herbs, and greens
- Improving indoor air quality through oxygen release
- Providing fresh food during winter without soil
They fail when:
- Reservoirs aren’t topped off
- Nutrients aren’t refreshed
- You simply forget they exist
The yield depends entirely on number of plants and duration of interest. A single system can quietly supply salads for weeks or months, then go dormant when attention shifts elsewhere.
Tactical role:
Indoor hydro is not a foundation food system. It’s a bridging system — nutritional, psychological, seasonal — and extremely valuable when treated as such.
Tier 3: Indoor Hydro Starts and Landing Zones
Front-Loading Growth, Then Choosing Where Plants Finish
This tier introduces intentional tasking.
Instead of growing everything to completion indoors, you use hydroponics as a growth accelerator — starting plants during late winter, then assigning them “landing zones” once conditions allow. After your last frost date (or using cloches).
Landing zones include:
- Lean-to greenhouse
- Self-watering, no-till dirt garden beds
- Outdoor containers
- DWC systems in rebuilt greenhouse
The tradeoff here is coordination. You gain time by starting early, but you must decide where each plant ends its lifecycle. This is where planning replaces labor.
Tier 4: Self-Watering No-Till Dirt Garden
Fire Gardening and Low-Intervention Soil Systems
This tier introduces soil — but without traditional tilling, weeding, or constant watering.
- The emphasis here is:
- Mulch instead of cultivation
- Moisture retention instead of irrigation schedules
- Soil biology instead of chemical inputs
“Fire gardening” fits here as a soil-reset and nutrient-cycling tactic, not as daily labor. More on that later in the series.
Tradeoff:
Higher yield potential than perennials alone, but requires seasonal intervention and decision-making. At this level, block an hour a day but you shouldn’t use it all.
Tier 5: Greenhouse Rebuild and DWC Production
High Yield, High Control, Moderate Time Commitment
This is the upper end of the HadG time spectrum. Here we intentionally invest time for:
- Tomatoes
- Peppers
- High-value crops with long harvest windows
Using 8 DWC systems with air stones, the goal is maximum yield per square foot with predictable results. This will be covered separately as a ShopTalk Sunday series on UrbanSurvival. We have to rebuild the greenhouse, first!
This tier is optional — not foundational — but it’s where abundance happens when time and interest are available.
Tactical Summary
- Perennials keep you fed when everything else fails. It’s right next door to foraging (with you might want to bone up on, just in case, too…)
- Indoor hydro keeps you fresh and sane during winter.
- Hydro starts buy you time.
- No-till dirt scales production with low effort.
- Greenhouse DWC converts time into abundance. (Of the really good stuff!)
Each tier stacks on the one below it. None require you to operate at maximum effort all the time.
That’s the point.
Here’s What We Will Cover in Part 2:
Next week, we’ll get into tasking. But this week? We have to do something more important first.
Your First Tasks: Pick a Planting Date and Stick to It!
Nothing is more of a turn-off than thinking you can eat from a garden from random seeds tossed in the ground “any old time.”
First, you need to know which USDA Climate Zone (for plants, not politics, lol) you live in. To do that? Click here: USDA Plant Hardiness Zone Map | USDA Plant Hardiness Zone Map
Now the next thing you need is a Last Frost Date. Look that up here: Frost Dates: First and last frost dates by zipcode – Garden.org.
Your Second Task
You don’t have a whole hour a day, yet. But, are you sure you want to work that hard?
Hard Work – with the right tactical garden plan – will pay off handsomely. But think like an engineer here. Constraints. What limits, what guides, what’s competing for your time?
Before you worry about systems, yields, or clever tricks, you need to set you very own – hard and personal – constraints:
- How many square feet will you actually be working this year?
- How much of that is dirt, containers, greenhouse, or indoor space?
- Which areas are “low-effort forever” and which ones are optional projects?
These aren’t philosophical questions. They’re operational ones.
Because once you know your footprint, the next step is unavoidable: seeds. That is why right now, you will be thinking about a semi-perennial tomato and wintering over (cherry type can winter over inside). Or do you run a fast maturing dirt garden favorite like an Ace-55?
But wait…if you’re on keto how about some beefsteaks to go with all that protein you’re wolfing down. See? Complicated. And the clock is running because you have called a date.
Right now, seed racks look full. They always do—right before they aren’t. When the ground thaws and planting season hits, the popular varieties thin out fast. The people who hesitated become the ones saying, “I was going to grow that…”
You don’t want to be in the also-thought-about-it pack.
Next week, we’ll turn goals into a tasking plan that fits your time, your energy, and your attention span. But between now and then, your only assignment is simple:
- Define your space.
- Define your tactic that feels best.
- Lock your intent.
- Order your seeds.
The clock is already running—even if it doesn’t feel like it yet.
Bring a pencil and day planner next week.
We’re still growing,
George & Elaine