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Lowensvlei Flower Farm-Gerbera Daisies | Malmesbury | Cape Town
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What to Plant in September in South Africa: Flowers, Vegetables & Herbs

Spring is finally here! September is one of the most exciting months for South African gardeners. Warmer days and longer daylight hours mean it’s the perfect time to prepare your soil, refresh your beds, and start sowing seeds for a colourful and productive season.

Whether you’re in the Highveld, Lowveld, Cape regions, Bushveld, or along the KZN coast, this month offers countless opportunities to plant flowers, herbs, and vegetables that will thrive in your climate

🌸 Flowers to Sow in September

Bring your garden to life with a burst of colour. Popular choices include:

  • Alyssum, Asters, Marigolds, Zinnias, Sunflowers, and Cosmos – fast-growing annuals that brighten up borders and beds.

  • Delphiniums, Foxgloves, and Carnations – for taller, show-stopping displays.

  • Petunias, Impatiens, and Lobelias – ideal for pots, hanging baskets, and shady spots.

  • Proteas & Gazanias – proudly South African favourites for long-lasting impact.

These flowers not only attract pollinators but also make excellent cut flowers for your home.

🥕 Vegetables to Plant in September

September is the month to kickstart your summer veggie patch. Depending on your region, you can sow:

  • Tomatoes, Peppers, and Chillies – heat-loving crops best for warmer areas.

  • Cucumbers, Pumpkins, Melons & Watermelons – perfect for sprawling summer harvests.

  • Spinach, Lettuce, Beetroot, and Carrots – for continuous picking and kitchen staples.

  • Sweetcorn & Beans – ideal for succession planting to ensure harvests all season.

  • Broccoli, Cabbage & Cauliflower – in cooler zones where temperatures are still mild.

👉 Pro tip: Practice succession planting – sow small amounts every 2–3 weeks to ensure a steady supply instead of one big harvest.

🌿 Herbs for a Healthy Kitchen Garden

Fresh herbs are easy to grow and thrive in spring. This month, sow:

  • Basil, Coriander, Dill, and Chives – perfect for everyday cooking.

  • Lavender, Rosemary, and Thyme – hardy perennials for low-maintenance borders.

  • Rocket, Wild Rocket & Oregano – excellent for salads and pizza toppings.

  • Chamomile & Echinacea – not only medicinal but also pollinator-friendly.

🌍 Regional Planting Tips

South Africa’s diverse climate means timing can vary.

  • Warmer regions (Lowveld, Bushveld, KZN Coast, Northern Cape): You can start sowing heat-loving vegetables and flowers directly outdoors.

  • Cooler regions (Western & Eastern Cape, Highveld): Watch for late cold fronts. Sow indoors or under cover to protect seedlings from sudden temperature drops.

🌻 September Gardening To-Do ListPrepare beds with compost and organic matter.

  • Remove dead winter crops and weeds.

  • Mulch to retain moisture and suppress weeds.

  • Deadhead winter flowers to encourage new growth.

  • Protect young seedlings with mulch or light netting.

Final Thoughts

September is the gateway to summer abundance. With the right flowers, vegetables, and herbs, your garden will be bursting with life in just a few weeks. Whether you’re after bright blooms or fresh produce for your kitchen, now is the time to sow, nurture, and enjoy the promise of spring.

🌼 Ready to grow? Explore our flower seeds and vegetable seeds in our online store today!

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