Growing the Diva: A Complete Guide to Cauliflower Transplanting
🌱 The Soshanguve Growing System
This is Part 15 of the journey — from overgrown land to a self-sustaining organic food system.
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Next: Part 16 — Perennial Shoots: Propagating Kale from Cuttings
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June 11, 2026 • Soshanguve, Pretoria"Cauliflower is the diva of the vegetable garden. It demands perfect soil, steady water, and constant attention. But when you get it right, there is nothing more satisfying than cutting a perfect white head that you grew from a seed — in a pot, on your own terms."
Growing Food in Soshanguve (Part 15): Growing Diva — Planting Cauliflower Seedlings
The morning of June 11, 2026, was cold and still. I walked out to the garden with a tray of cauliflower seedlings — not in seedling trays, but in individual pots. Each one had been raised with care, given its own space to develop a strong root system before facing the challenges of the field.
Cauliflower is not an easy crop. It's demanding, sensitive, and easily stressed. It needs consistent moisture, steady temperatures, and plenty of nutrients. If you neglect it, it won't form a head at all — or it will form a tiny, bitter one that's barely worth harvesting.
But when you get it right, cauliflower is one of the most rewarding vegetables you can grow. A perfect white head, dense and tight, is a thing of beauty. And it's expensive to buy — R25–40 at the market. Growing your own saves money and gives you a quality that stores can't match.
I've grown cauliflower for years, and I've learned to respect its demands. This post documents how I planted this year's crop — the seedling selection, the spacing, the depth, the watering, and the mistakes I've learned to avoid.
1. Why Cauliflower?
I chose cauliflower for a few reasons. First, it's a cool-season crop that thrives in Soshanguve's winter temperatures (15–22°C days, 5–10°C nights). It grows well when other crops are slowing down.
Second, cauliflower has high market value. A single head sells for R25–40 at the local market. With the compost I've built from free resources, the only cost is seeds and labour.
Third, cauliflower stores well. Heads can last 2–3 weeks in the fridge, or they can be blanched and frozen for months. This makes it a valuable crop for food security.
And finally, I just like eating it. Roasted cauliflower, cauliflower mash, cauliflower soup — there are so many ways to use it.
I chose 'Snowball' variety, which is a classic white cauliflower that performs well in South Africa. It's reliable, disease-resistant, and produces dense heads.
2. The Seedlings — Grown in Pots
Healthy cauliflower seedlings in pots. Stocky stems, deep green leaves, and clean white roots visible through the drainage holes. These ones are ready for the field.
I raised these seedlings from seed, starting them on May 1. But unlike many gardeners who use seedling trays, I planted mine in individual pots. This decision was deliberate — pots give each seedling its own space, preventing root competition and allowing for stronger, more developed root systems before transplanting.
Each pot was about 10cm in diameter and 12cm deep — large enough for a cauliflower seedling to develop a robust root ball without becoming root-bound. The potting mix was our homemade blend: 50% compost (from Step 3), 30% coarse river sand, and 20% vermiculite. This mix drains well but retains enough moisture for steady growth.
I sowed two seeds per pot, then thinned to the strongest seedling once they germinated. This gave each plant a head start — no competition for nutrients, no leggy stretching for light.
The pots were kept in a shaded area for the first two weeks, then moved to full sun to harden off. I watered them daily, always in the morning so the leaves could dry before nightfall (wet leaves at night invite mildew).
On transplant day, I inspected each seedling. I was looking for:
- Root development: When I gently tipped a pot upside down, the root ball held together perfectly. White, fibrous roots were visible at the edges of the soil mass — a sign of healthy, active growth.
- Stem thickness: Pencil thickness (5–8mm). Thinner seedlings were weak.
- Leaf count: 4–6 true leaves. Fewer than 4 was too young.
- Leaf color: Deep green with no yellowing or purple streaking.
- No pests or disease: No aphids, no mildew, no holes in the leaves.
About 30% of the seedlings were discarded — weak, leggy, or showing signs of stress. Cauliflower is demanding even before it goes into the ground, and I've learned not to waste time on weak plants.
Why pots over trays? I've used both methods, and I've found that pot-grown seedlings transplant better. The root ball stays intact when you remove the plant from the pot, which means less transplant shock. In trays, the roots can become tangled, and you often have to tear them apart. Pots give each plant its own protected space to develop a strong, independent root system.
The difference between tray-grown and pot-grown cauliflower is visible within a week of transplanting. Pot-grown seedlings barely wilt — they just keep growing. Tray-grown seedlings often take 3–5 days to recover from transplant shock. The pots give you a head start.
3. The Spacing
Cauliflower needs room — lots of it. Mature plants can be 60–90cm wide, with massive leaves that shade the ground. Overcrowded cauliflower produces small, loose heads — or no heads at all.
I used a spacing of 45–60cm between plants and 60cm between rows. This gives the plants room to expand and allows space for weeding and harvesting.
Cauliflower is a space-intensive crop. I planted only 3–4 plants per square meter, compared to 33 onions per square meter. But the heads are high-value, so the trade-off is worth it.
I interplanted the cauliflower in the widest gaps of the beds, away from the garlic and onions. Brassicas and alliums are good companions — onions repel pests that affect cauliflower, and cauliflower shades the soil for the onions.
4. The Planting
Planting the cauliflower seedlings. The video shows the complete technique — removing from pots, setting into the beds, and firming the soil around each plant.
The planting technique for pot-grown seedlings is different from tray-grown ones. With pots, you have a solid root ball that holds together — you don't have to tease roots apart or worry about breaking fragile root systems.
I prepared the planting holes with a dibber, about 5–6cm deep and slightly wider than the root ball. Then I gently tipped each pot upside down, tapping the bottom to release the root ball. The soil held together perfectly — a solid cylinder of dark, fibrous roots.
I placed each root ball into its hole, making sure the crown — the point where the stem meets the roots — was at the right depth. Cauliflower seedlings should be planted slightly deeper than they were in the pot, about 2–3cm deeper than the root ball. This encourages adventitious roots to form along the buried stem, making the plant more stable.
I firmed the soil gently around each root ball, being careful not to press too hard — cauliflower roots are delicate. Then I pulled the compost layer back around the plant, leaving a 3cm gap around the stem.
After planting, I watered each plant with about 1–2 liters of room-temperature water. The water settled the soil around the roots and eliminated any air pockets.
I also placed cardboard collars around each stem to protect against cutworms. Cutworms are the #1 threat to newly transplanted cauliflower — they emerge at night and sever the stem at ground level. The collars cost nothing (recycled shipping boxes) and prevent 90% of cutworm damage.
5. The Finished Bed
The finished bed — cauliflower seedlings planted, watered, and protected. The pots gave them a strong start.
The finished bed looked good. The seedlings were standing straight, the spacing was consistent, and the cardboard collars were in place. The garden was filling up — garlic, chard, spring onions, purple onions, and now cauliflower.
I stepped back and looked at the garden. It had come a long way since March. The land that was overgrown and neglected was now a productive food system. And the cauliflower was the latest addition.
6. Mistakes I've Made
I've made plenty of mistakes with cauliflower. Here are the ones I want to share:
Mistake #1: I planted cauliflower too close together.
The first time I grew cauliflower, I planted it at 30cm spacing. The plants grew well, but the heads were tiny. Now I space at 45–60cm.
Mistake #2: I didn't water consistently.
Cauliflower needs consistent moisture. I let the soil dry out during the head-forming stage, and the heads never formed properly. Now I water regularly during head development.
Mistake #3: I didn't protect against cutworms.
I lost an entire row of cauliflower to cutworms. Now I always use cardboard collars.
Mistake #4: I planted cauliflower in summer.
I thought cauliflower would grow in summer. It bolted immediately — went to seed without forming heads. Now I only plant in winter.
Mistake #5: I didn't feed cauliflower enough.
Cauliflower is a heavy feeder. I didn't apply enough compost, and the heads were small. Now I side-dress with compost at week 4 and week 8 after transplant.
Mistake #6: I left seedlings in pots too long.
I once left cauliflower seedlings in their pots for 10 weeks because I wasn't ready to plant. They became root-bound — roots circling the bottom of the pot. The plants never recovered, and the heads were small. Now I transplant at 6 weeks, no later.
7. What to Expect
Cauliflower takes time. Here's what I expect over the coming months:
June–July (Winter): The cauliflower will grow slowly. Leaves will expand, but there won't be much visible growth. I'll water weekly and check for pests.
August (Late Winter): Growth accelerates as the days get longer. The plants will start to produce large leaves. I'll water more frequently and apply a second layer of compost.
September (Spring): The heads will start to form. I'll check daily for signs of head development. When the heads are golf-ball size, I'll start blanching them — tying the outer leaves over the head to keep it white.
Late September–October (Harvest): The heads will be ready to harvest. I'll cut them cleanly at the base and enjoy.
I've been through this cycle before, and I know what to expect. Cauliflower tests your patience, but it rewards you in the end.
🌱 Evergreen Field Notes — Part 15
- Location: Soshanguve, Pretoria, South Africa
- Current phase: Planting — Cauliflower
- Variety: 'Snowball' (white cauliflower)
- Seed sowing date: May 1, 2026
- Growing method: Individual pots (10cm diameter × 12cm deep)
- Transplant date: June 11, 2026
- Seedling age: 41 days (6 weeks)
- Total seedlings planted: 12
- Plant-to-plant spacing: 45–60cm
- Row-to-row spacing: 60cm
- Plants per square meter: 3–4
- Planting depth: 2–3cm deeper than root ball
- Water applied: 1–2 liters per plant
- Cutworm protection: Cardboard collars
- Expected harvest: August–September 2026
- Key advantage of pots: Stronger root balls, less transplant shock, faster establishment
- Next phase: Propagating kale from cuttings
8. What's Next: Kale Propagation
With the cauliflower in the ground, the garden is almost full. The next step is propagating new kale plants from cuttings.
Kale is a cold-hardy brassica that thrives in Soshanguve's winter conditions. Unlike cauliflower, which is grown from seed, kale can be propagated vegetatively — taking cuttings from existing plants and rooting them to create new, genetically identical plants.
In Part 16 — Perennial Shoots: Propagating Kale from Cuttings, I'll cover:
- Why propagate kale from cuttings: Faster establishment, genetic uniformity, zero cost.
- Selecting the right branches: Side shoots that are 10–15cm long with 4–6 leaves.
- The cutting technique: Making a 45-degree cut just below a leaf node.
- Rooting medium and containers: Homemade potting mix in recycled pots or trays.
- Creating a humid environment: Covering the cuttings with plastic to prevent moisture loss.
- Transplanting rooted cuttings: After 14–21 days, the cuttings will have roots and can be planted.
Kale is one of the most nutritious leafy greens you can grow. Propagating from cuttings means you can turn one kale plant into 20, 30, or 50 plants at zero cost.
Stay tuned for the next update from Soshanguve.
9. Final Thoughts
Standing in the garden after planting the cauliflower, I looked at the beds. The seedlings were in the ground, the collars were in place, and the water had soaked in. The garden was almost full.
Growing cauliflower in pots gave me an advantage. The root balls were strong, the seedlings barely wilted, and they started growing within days. It's a small extra step — filling pots instead of trays — but it makes a real difference.
Cauliflower is not an easy crop. It demands attention, consistency, and patience. But it's worth it. A perfect white head, grown from your own seed, in soil you've built yourself — there's nothing quite like it.
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 16: Perennial Shoots — Propagating Kale from Cuttings →
📚 View All Posts in the Series
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