Plant Care Guides / Outdoor & Coastal / Fynbos and Proteas
Indigenous | Advanced Care | Fynbos and Proteas
Proteas are the crown jewels of the fynbos, and growing them successfully in a garden comes down to one thing: understanding that they need the opposite of what most garden plants want.
Where other plants need rich, composted, well-fed soil, proteas need poor, hungry, well-drained, acidic soil and will actually die from too much kindness. Get the soil and drainage right, and the rest is easy. The large, sculptural flower heads come in shades from white and cream through to pink, red and deep crimson, and they attract sunbirds, sugarbirds, bees and beetles. Every flower is a show-stopper and lasts well as a cut flower. Some species are easier than others for garden growing; ask us which varieties are doing well in St Francis Bay gardens.
1 to 3 m depending on species. Some stay compact; others can become substantial shrubs.
Moderate.
Feature plant, fynbos garden, rockery, cut flower. Plant where you can appreciate the blooms up close.
Full sun with good air circulation. They love windy, exposed positions, which is the opposite of what most gardeners assume. Do not plant them in a sheltered, humid corner.
This is where most people go wrong. Proteas need very well-drained, sandy, acidic soil (pH around 5.5 to 6). The sandy coastal soil in parts of St Francis Bay can work well, but if your soil is alkaline (lime-rich), which much of it is, you may need to grow proteas in large containers using an acidic potting mix, or create raised beds with imported acidic sand. Never add compost, bone meal or rich fertiliser to the planting hole. The roots are adapted to nutrient-poor conditions and cannot handle phosphorus, it will kill them.
Water deeply once a week while establishing, which can take up to 18 months. Once established, they are drought-tolerant. Overwatering and waterlogging are more dangerous than drought.
Do not use standard garden fertilisers. No bone meal, no superphosphate, no high-phosphorus products of any kind. If you need to feed, use a low-phosphorus fertiliser specifically designed for fynbos or proteas, or a dilute fish or seaweed emulsion. Many proteas thrive with no feeding at all.
Prune when cutting flowers, taking a length of stem with foliage. This encourages branching and keeps the plant compact. After flowering, remove spent heads. Do not cut back into old, bare wood, which does not resprout.
Ask about availability. WhatsApp us to check what is currently in stock, or visit the nursery and we will help you choose the right plant for your spot.
