Swiss Chard Update: Mid-Season Growth Audit and Selective Harvesting
🌱 The Soshanguve Growing System
This is Part 17 of the journey — from overgrown land to a self-sustaining organic food system.
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June 25, 2026 • Soshanguve, Pretoria"Swiss chard does not care about the calendar. It cares about the soil. Feed the soil, and it will feed you through the coldest winter, one leaf at a time."
Growing Food in Soshanguve (Part 17): Swiss Chard Update — Mid-Season Growth Audit
The morning of June 25, 2026, was cold and clear — the kind of winter morning that makes you grateful for warm hands and a good hat. I walked out to the Swiss chard bed with a basket, ready for the third harvest.
The chard had been in the ground for 59 days. When I planted it back in April, it was a tiny seedling with just a few leaves. Now it was a robust plant with leaves as long as my forearm. The deep green colour told me the nitrogen was working. The thick white ribs told me the water uptake was good. The glossy surface told me the plant was healthy.
This was my favourite part of gardening — the harvest. All the work of the past months — clearing the land, building the beds, planting the seedlings, applying the compost and fertilizer — all of it culminated in this: a basket of fresh, nutritious greens that would feed my family.
In this post, I'll document the harvest — the selection, the technique, the yield, and the lessons learned. I'll also look back at the interventions we've applied — the fish fertilizer, the feather compost, the mulch — and assess how they've contributed to the chard's success.
1. The State of the Crop
The chard bed was looking good. The plants were healthy, the leaves were large, and the colour was deep green. Here's the data:
- Days since transplant: 59 days (April 27 to June 25)
- Plants: 18 plants in a 3m² bed
- Average leaf length: 35–45cm
- Average leaf width: 15–20cm
- Average plant height: 30–40cm
- Average leaves per plant: 8–12
- Health rating: 9/10
The leaves were thick and glossy, with prominent white ribs. The colour was deep green, which told me the nitrogen levels were adequate. There was some minor insect damage — a few small holes in the outer leaves — but nothing serious.
I was particularly pleased with the winter performance. The chard had weathered several cold nights — temperatures dropped to 2–4°C in early June — without any signs of frost damage. The mulch layer had done its job, protecting the soil and roots from the cold.
The chard seems to have responded particularly well to the feather compost we applied on June 5. Within 10–14 days, the leaves became noticeably thicker and glossier. The compost appears to have provided a slow-release nitrogen boost that complements the fish fertilizer.
2. Selecting the Leaves
Inspecting the leaves. The thick white rib and deep green colour indicate a healthy, well-nourished plant.
I started by walking through the bed, inspecting each plant. I was looking for the largest, most mature outer leaves — the ones that had reached full size and were ready to harvest.
Selection criteria:
- Size: At least 30cm long and 15cm wide.
- Position: Outer leaves only — never the inner, upright leaves.
- Colour: Deep green — no yellowing or pale green.
- Stem condition: Crisp and firm — no wilting.
- Pest damage: Minor damage acceptable; large holes or heavy damage avoided.
- How many: 1–3 leaves per plant, leaving at least 5–7 leaves behind.
The rule I follow is simple: never take more than 30% of a plant's leaves at one time. Taking 30% allows the plant to continue photosynthesizing and producing new leaves without stress. Taking 50% or more can stunt the plant for 2–3 weeks.
I selected about 2 leaves per plant on average — 36 leaves total. The leaves were large and heavy, weighing about 33g each on average. The total harvest was 1.2kg.
3. Harvesting the Leaves
Harvesting the outer leaves. The snap-and-pull technique ensures a clean break without damaging the crown.
The harvesting technique is simple but precise. I grasped each leaf near the base, where it meets the main crown. Then I pulled downward and outward in one quick, decisive motion. The stem snapped cleanly at the base, leaving no stub attached to the plant.
I've learned the hard way that leaving a stub is a mistake. If you leave a stub, it rots and can introduce disease to the crown. I've also learned not to twist or wiggle the leaf — that tears the crown tissue and damages the plant.
The snap method works best when the stem is crisp and the plant is hydrated. I harvested in the morning, when the plants were full of water from the cool night air.
The harvest technique in action. A quick downward and outward snap at the base of the stem — clean and efficient.
4. The Finished Harvest
The finished harvest — 36 leaves, 1.2kg of fresh Swiss chard. This is the largest harvest yet.
The finished harvest was impressive. 36 leaves, 1.2kg total weight. The leaves were deep green, glossy, and crisp. They filled the basket completely.
This was the third harvest from the chard bed. The first harvest (May 18) yielded about 0.5kg. The second (June 8) yielded about 0.8kg. This one yielded 1.2kg. The plants are getting stronger and more productive over time.
I was particularly pleased with the size of the leaves. Some of them were 45cm long and 20cm wide — larger than anything I could buy at the market. The quality was excellent — no yellowing, no pest damage, just perfect, fresh greens.
The total cumulative harvest so far is about 2.5kg from 18 plants. That's about 140g per plant. And there's plenty more to come.
5. What Worked
Looking back at the past 59 days, several things worked well:
The fish fertilizer (Step 10) made a difference.
I applied fish fertilizer every 14 days starting May 11. The chard responded quickly — within 3–4 days, the leaves were darker green and growth accelerated. The 1:10 dilution rate was appropriate — no signs of nitrogen burn.
The feather compost (Step 13) was a game-changer.
I applied feather compost as a top-dressing on June 5. Within 10–14 days, the leaves became noticeably thicker and glossier. The compost seems to have provided a slow-release nitrogen boost that complements the fish fertilizer.
The mulch layer (Step 5) protected the soil.
The thick straw mulch layer kept evaporation low and protected the soil from winter cold. Without the mulch, I would have needed to water much more frequently and the roots would have been more vulnerable to frost.
The spacing worked.
I planted the chard at 30cm between plants and 45cm between rows. This gave the plants enough room to expand without overcrowding. The leaves were large and healthy, with good air circulation.
6. Mistakes I Made
I also made some mistakes. Here are the ones I want to share:
Mistake #1: I harvested too many leaves from one plant.
In my enthusiasm, I took 4 leaves from one plant, leaving only 3 behind. The plant took two weeks to recover. Now I follow the 30% rule strictly.
Mistake #2: I left a stub on one plant.
I didn't snap cleanly, and a small stub remained. It rotted and I had to remove the damaged tissue. Now I always make a clean snap.
Mistake #3: I harvested in the afternoon on a hot day.
The leaves were wilted and didn't store well. Now I always harvest in the morning when the plants are full of water.
Mistake #4: I didn't water after harvesting.
I should have given the plants a light watering after harvesting to help them recover. Now I water after each harvest.
7. What to Expect Next
The chard plants are now fully established and will continue producing leaves for months. Here's what I expect:
July–August (Mid-winter): Growth will slow but continue. I'll harvest every 2–3 weeks. The cold weather makes the leaves sweeter.
September (Spring): Growth will accelerate as temperatures warm. I'll harvest every 1–2 weeks. The plants will be at their peak.
October–November (Late spring): The plants may start to bolt as daylength increases. I'll harvest all remaining leaves and let the plants go to seed.
December (Summer): The plants will be finished. I'll compost them and prepare the bed for the next crop.
I've been through this cycle before, and I know what to expect. The chard will keep producing for months, and I'll keep harvesting.
🌱 Evergreen Field Notes — Part 17
- Location: Soshanguve, Pretoria, South Africa
- Current phase: Harvest — Swiss Chard (Third Harvest)
- Variety: Fordhook Giant
- Transplant date: April 27, 2026
- Days since transplant: 59 days
- Plants: 18
- Bed area: 3m²
- Leaves harvested: 36
- Harvest weight: 1.2kg
- Average leaf weight: 33g
- Cumulative harvest to date: 2.5kg
- Yield per plant (cumulative): 140g
- Yield per square meter: 833g
- Fish fertilizer applications: 4 (May 11, May 25, June 8, June 22)
- Feather compost application: June 5 (3–4cm layer)
- Winter performance: Excellent — no frost damage
- Next phase: Garlic mid-winter growth audit
8. What's Next: Garlic Update
With the chard harvest complete, I turned my attention to the next crop. The garlic was up next — it had been in the ground for almost 9 weeks and it was time to check its progress.
In Part 18 — Garlic Development: Mid-Winter Growth Audit, I'll cover:
- Growth metrics: Current plant height, leaf count, and overall health.
- Bulb development check: Gently excavating a few plants to check bulb size.
- Response to interventions: How the garlic has responded to the feather compost and winter conditions.
- Upcoming fruit fertilizer application: Switching from fish fertilizer to fruit fertilizer for bulb development.
- Garlic scape management: When to remove scapes to direct energy to the bulb.
Stay tuned for the next update from Soshanguve.
9. Final Thoughts
Standing in the garden after the harvest, I looked at the chard bed. The plants were still healthy, the leaves were still green, and the mulch was still in place. The harvest was just the beginning — the plants would keep producing for months.
I thought about the journey. The chard had gone from a tiny seedling to a robust plant that could feed a family. It had weathered cold nights, dry spells, and minor pest pressure. And it had thrived.
This is what gardening is about. Not just the harvest, but the process. The care, the attention, the learning. The satisfaction of watching something grow from nothing.
The garden was healthy. The soil was alive. And the food was on its way.
— 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 7: The Staging Environment — Planting Swiss Chard
← Part 8: The Middleware — Planting Spring Onions
← Part 9: Resource Protection — Manual Weed Management
← Part 10: The Nitrogen Boost — Applying Fish Fertilizer
← Part 11: Weeds to Wealth — Building a Compost Heap
← Part 12: Compost Hacking — Sourcing Chicken Feathers
← Part 13: Soil Armor — Top Dressing with Chicken Manure
← Part 14: From Seedling to Soil Armor — Planting Onions
← Part 15: Growing Diva — Planting Cauliflower Seedlings
← Part 16: Perennial Shoots — Propagating Kale from Cuttings
Part 18: Garlic Development — Mid-Winter Growth Audit →
📚 View All Posts in the Series
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