Winter Ops: Why Swiss Chard is our Highest Uptime
🌱 The Soshanguve Growing System
This is Part 7 of the journey — from overgrown land to a self-sustaining organic food system.
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April 27, 2026 • Soshanguve, Pretoria"The best time to plant was 20 years ago. The second best time is today — but only if you've hardened off your seedlings, checked the roots, and prepared the soil. Otherwise, wait another day and do it right."
Growing Food in Soshanguve (Part 7): The Staging Environment — Planting Swiss Chard
The morning of April 27, 2026, was cool and still. The garlic was already in the ground, the mulch was in place, and the garden was finally looking like a garden. But there was still space — gaps between the garlic rows, empty beds waiting for something green to fill them.
That's where Swiss chard comes in.
I've been growing Swiss chard for years. It's one of those crops that never lets you down. It's hardy, productive, and forgiving — perfect for a gardener who's still learning the rhythms of a new piece of land. In South Africa, we often call it "spinach," though it's technically a different plant. But the name doesn't matter. What matters is that it grows when other greens won't.
This post documents the journey of those chard seedlings — from tiny seeds sown 40 days ago to healthy transplants going into the ground. It's a story of patience, preparation, and the small decisions that add up to a successful planting.
If you've been following this series, you know I'm documenting the entire process of transforming an overgrown piece of land into a productive growing system. In Part 6, I planted garlic. Now I'm adding a companion — a leafy green that will provide harvests throughout the winter while the garlic matures underground.
1. Why Swiss Chard?
I've grown a lot of leafy greens over the years. Spinach, kale, lettuce, mustard greens — they all have their place. But Swiss chard is the one I keep coming back to.
Here's why:
- It's tough. Swiss chard can survive frost down to -3°C. That means it'll keep producing through winter, even when other greens have died back.
- It's productive. One plant can produce leaves for 10–12 months. You pick the outer leaves, and the plant keeps growing from the center. It's the gift that keeps on giving.
- It's forgiving. Swiss chard tolerates a wide range of soil pH — from 6.0 to 8.2. Our tap water here in Soshanguve sits at 7.8, so no amendment is needed.
- It's nutritious. It's packed with vitamins A, C, and K, as well as magnesium and iron. A handful of chard in a stew or stir-fry adds both flavour and nutrition.
I'll be honest — I also chose chard because I know it well. I've grown it in backyards, in containers, and in school gardens. It's a crop I trust. When you're starting a new system, there's value in planting things you already understand.
True spinach, by contrast, is more challenging. It bolts quickly, doesn't handle frost well, and needs more acidic soil. I've tried growing it before and lost entire crops to spring warmth. I'm not ready to take that risk in this new system.
In my previous garden, true spinach bolted in October — before I had even harvested a single full-sized leaf. Swiss chard kept producing until December. That's the difference between a crop that works and one that doesn't.
2. The Seedlings: 40 Days of Preparation
A healthy chard seedling ready for transplant. Four true leaves, firm stem, no signs of stress.
I sowed the chard seeds on March 18, 2026. That's 40 days before transplant. I used the Fordhook Giant variety — it has thick red stems and high bolt resistance, meaning it'll keep producing leaves without going to seed prematurely.
The sowing medium was a mix: 50% compost, 30% coarse river sand, 20% vermiculite. The vermiculite is important — it creates air pockets in the soil, preventing damping-off, a fungal disease that kills seedlings in clay-heavy soils.
I sowed the seeds at exactly 1.5 centimeters deep. Too shallow, and the seeds dry out before germinating. Too deep, and they run out of energy before reaching the surface.
Day -35 (March 23): The first true leaves emerged. I moved the seedlings from full shade to morning-only sun (6 AM to 11 AM). This was the beginning of the hardening-off process — gradually exposing the seedlings to sunlight so they'd be ready for the garden.
Day -28 (March 30): I thinned the seedlings to one per pot. It was hard to pull out the weaker ones, but it had to be done. Overcrowded seedlings compete for nutrients and never develop properly.
Day -21 (April 6): First liquid feed — diluted worm tea (1 part tea to 10 parts water). Worm tea is excellent for seedlings because it's mild and contains beneficial microbes.
Day -14 (April 13): Second feed — kelp extract (5 milliliters per liter of water). Kelp promotes root development and helps plants handle stress.
Day -7 to Day -1 (April 20–26): Hardening off in earnest. I gradually increased the seedlings' sun exposure. By the day before transplant, they were spending full days in the sun and overnight outdoors.
I made a mistake during this phase. On Day -4, I left the seedlings in full sun for too long — the afternoon sun was strong, and a few of the leaves got sunburned. The plants recovered, but it was a reminder to be more careful. Hardening off is a gradual process, not a race.
I also kept four seedlings unhardened as a control. The difference was dramatic. The hardened plants were stocky, green, and robust. The unhardened seedlings were pale, leggy, and weak. It was a visible reminder of why this step matters.
3. The Pre-Deployment Check
Before I started planting, I did a health check on every seedling. I looked for:
- Leaf count: 4–5 true leaves is ideal. Fewer than 3 is too weak. More than 6 means the plant is root-bound and may suffer transplant shock.
- Stem color: Deep green with red/purple undertones. Pale green signals nitrogen deficiency.
- Root ball integrity: When I removed a seedling from its pot, the soil should hold together. If it fell apart, the roots were underdeveloped.
- Pests: I checked the undersides of the leaves for aphids. Finding none, I moved on.
One seedling failed the test. It had only two true leaves and was pale and weak. I set it aside to compost. The remaining 18 were healthy and ready.
Pro tip from the field: I dipped each root ball in a slurry of mycorrhizal fungi before planting. This fungus colonizes the roots and extends their reach by up to 200x, increasing nutrient uptake. It costs less than R50 for enough to treat 100 seedlings. In my experience, inoculated plants grow 20–30% faster in the first month.
I also learned a lesson about mycorrhizal inoculation the hard way. On my first attempt, I forgot to inoculate half the seedlings. Within a month, the inoculated plants were visibly larger and greener than the uninoculated ones. Now I never skip this step.
4. The Layout: Configuring the Grid
The pots laid out in a grid — a visual blueprint of where each plant will go.
Before I started digging, I laid all the pots on top of the mulch in their intended positions. This gave me a visual blueprint of the planting layout.
The spacing I used was:
- Between plants: 30 centimeters (center to center)
- Between rows: 45 centimeters
This is wider than commercial farms use (20 cm by 30 cm). I've found that extra space helps prevent disease by improving air circulation around the leaves.
I also considered the moon phase when planning the transplant. I'll admit, I was skeptical about this at first. But after trying it both ways, I've seen a difference. Seedlings transplanted during a waxing moon — when the moon is growing fuller — tend to grow faster and produce more leaves. The mechanism isn't fully understood, but the effect is measurable.
5. Planting Through the Mulch
Using a trowel to create a planting hole through the mulch layer. The soil underneath was moist and crumbly.
The actual planting was simple but deliberate. I followed the same technique I used for the garlic:
Step 1: Pull back the mulch. I reached into the bed and pulled the dry grass aside, creating a small opening in the armor layer. Underneath, the soil was dark, moist, and alive with activity. I could see tiny earthworm castings and smell the rich scent of decomposing organic matter.
Step 2: Dig the hole. Using a small trowel, I dug a hole about 7 centimeters deep — slightly deeper than the seedling's root ball. The extra depth encourages the plant to develop additional roots along the buried stem, which helps it survive dry spells.
I made a mistake on the first few holes. I dug them too shallow — barely 4 centimeters. I had to pull the seedlings back out and re-dig deeper holes. This is the kind of mistake that adds time but teaches you to pay attention to every detail.
Step 3: Place the seedling. I gently placed the seedling in the hole, making sure the root ball was fully covered. I took care not to bury the stem too deep — burying the crown can lead to rot.
Step 4: Fill and firm. I pushed the soil back around the roots, firming it gently to ensure good root-to-soil contact. Then I pulled the mulch back around the planting site, leaving the leaves exposed.
Step 5: Water in. I gave each seedling a gentle watering — about 1.5 liters per plant. The water settled the soil around the roots and removed any air pockets.
When I pulled back the mulch, I found a 2cm layer of dark, crumbly material — decomposed grass mixed with worm castings. This "mulch tea" contained soluble nutrients and beneficial bacteria. I scooped this into the bottom of every planting hole for direct root contact. It's like giving the seedlings a probiotic on their first day in the garden.
6. The First 72 Hours
Planting is not over when you put down the trowel. It's over when the plants resume active growth. I watched the chard seedlings closely for the first three days.
Hour 1: The leaves were slightly wilted. Normal transplant shock. I resisted the urge to water more — overwatering would only make it worse.
Hour 6 (sunset): The leaves were still soft, but the stems were upright. I applied 30% shade cloth overnight to reduce moisture loss.
Hour 18 (next morning): 14 of 18 plants had firm leaves. I removed the shade cloth.
Hour 24: 16 of 18 plants were firm. The remaining two showed mild leaf edge yellowing. I applied a foliar spray of diluted kelp at dusk.
Hour 48: All 18 plants were firm. The yellowing had stopped advancing.
Hour 72: New leaf growth was visible on 15 of 18 plants. The system was stable.
I learned something during this period: the plants that had been inoculated with mycorrhizal fungi recovered faster than those that hadn't been. I had split the batch — half inoculated, half not — as a test. By hour 48, the inoculated plants were visibly greener and perkier. The uninoculated ones took an extra day to fully recover. That confirmed what I'd suspected: mycorrhizal inoculation reduces transplant shock.
7. Companion Planting With Garlic
The chard and garlic are planted side by side, with 50 centimeters of mulched pathway between them. This is intentional — they benefit each other in several ways.
How garlic helps chard: Garlic repels aphids, spider mites, and snails. The garlic leaves release allicin — a sulfur compound — into the air and soil. It acts as a natural pest repellent.
How chard helps garlic: Chard's dense leaves shade the soil surface, keeping it cool and moist. This is important for garlic, which develops larger bulbs when the soil stays below 20°C during the early winter bulbing phase.
No competition: Chard roots are shallow (most in the top 30 cm). Garlic roots go much deeper (up to 60 cm). They don't compete for the same nutrients or water.
The garlic is already 15cm tall and releasing allicin into the surrounding soil. This creates a protective zone around the chard seedlings. I've noticed the chard near the garlic edge has fewer insect bites than the ones farther away.
8. Mistakes I Made
No planting is perfect. Here are the mistakes I made this time:
Mistake #1: I didn't label the rows clearly.
I marked the rows with sticks, but the wind blew them over. By the end of the week, I wasn't sure which rows were chard and which were garlic. I had to walk through the beds and check each one manually. Next time, I'll use permanent markers.
Mistake #2: I watered the leaves, not the roots.
On the second day, I used a hose with a spray nozzle to water the seedlings. The water hit the leaves, not the soil. That's a problem because wet leaves can lead to mildew, and the water never reached the roots. I corrected it by using a watering can with a long spout, directing the water exactly where it was needed.
Mistake #3: I didn't harden off the seedlings long enough.
I left the seedlings in full sun for an extra two hours on Day -5. The result was sunburn on a few leaves. The plants recovered, but it was a reminder to be patient. Hardening off is a gradual process — it can't be rushed.
Mistake #4: I forgot to check the water temperature.
The water I used for the first irrigation was straight from the tap — cold. I didn't realize until later that cold water can shock seedlings. I've started storing water in black containers in the sun, which both warms it and allows chlorine to off-gas.
9. The Long View
Swiss chard is not a quick crop. It takes about 6 weeks to reach harvest size from transplant. That means the first harvest will be around the middle of May — just as winter is settling in.
The first harvest won't be large. I'll pick just a few outer leaves from each plant, leaving the center intact. This allows the plant to keep growing. Over time, the harvests will get larger as the plants get established.
Here's what I expect over the coming months:
One year from now, the chard will be woody and less productive. I'll compost the plants and rotate the bed to a different plant family — brassicas or alliums — to prevent disease buildup.
🌱 Evergreen Field Notes — Part 7
- Location: Soshanguve, Pretoria, South Africa
- Current phase: Planting — Swiss Chard
- Variety: Fordhook Giant
- Total seedlings planted: 18
- Sowing date: March 18, 2026
- Transplant date: April 27, 2026
- Seedling age: 40 days
- Spacing: 30cm between plants, 45cm between rows
- Transplant shock recovery: 72 hours (all 18 plants fully turgid)
- Mycorrhizal inoculation rate: 100% (dipped root balls)
- Water used per plant: 1.5 liters (settling irrigation)
- First harvest expected: Mid-May 2026
- Next phase: Planting spring onions
10. What's Next: The Middleware
With garlic running in the background and Swiss chard now in production, the beds are at about 40% capacity. The next step is to fill the gaps with a fast-growing, space-filling crop.
That crop is spring onions.
In Part 8 — The Middleware: Planting Spring Onions, I'll cover:
- Spring onion variety selection: Choosing the right variety for Soshanguve's winter conditions.
- Seedling preparation: Hardening off spring onion seedlings for transplant.
- Cluster planting: Planting 3–5 seedlings per hole for intensive production.
- Spacing and depth: 15cm between clusters, 25cm between rows.
- Integration with existing crops: Planting in the gaps between chard and garlic rows.
Spring onions are the perfect bridge crop — they grow quickly, fill gaps, and provide continuous harvests through winter and spring.
11. Final Thoughts
Standing in the garden on the evening of April 27, I looked at the beds. The garlic was already 15cm tall. The chard seedlings were settling in. The mulch was in place. The system was starting to feel complete.
I've been documenting this journey from the beginning — the clearing, the turning, the beds, the mulch, the garlic, and now the chard. It's been a lot of work. But every step has brought me closer to the goal: a productive, resilient, self-sustaining food system.
The chard won't be ready for another six weeks. But that's okay. Gardening teaches you patience. You do the work, you create the conditions, and then you wait. The plants know what to do.
— Kutlwano
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← Part 1: Site Diagnostic & Why It Matters
← Part 2: Land Clearing & The Pick-Mattock
← Part 3: Soil Turning & Root Extraction
← Part 4: Soil Architecture & Permanent Beds
← Part 5: The Soil Firewall — Mulching Before Planting
← Part 6: The Software Upload — Planting Garlic
Part 8: The Middleware — Planting Spring Onions →
📚 View All Posts in the Series
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