Gazania Care: Hot Dry Ground, Lean Soil and Constant Deadheading

The plant you are actually growing

Gazania is a low, spreading perennial from open, sun-scorched ground in southern Africa. The leaves sit in a flat rosette, often silver-backed and slightly leathery, and the flower stems come up on short stalks a few inches above them. Underneath is a coarse, deep-going root system built to find water a long way down and to sit out weeks of drought without complaint. Nothing about it is designed for a soft, sheltered, well-watered border.

That origin explains almost every success and every failure. Where gardeners treat gazania like a bedding annual in rich moist compost, it makes broad soft leaves, few flowers and eventually rots at the crown. Where they plant it in the worst spot they have - a gravel strip, a sun-baked slope, the top of a dry wall, a hot pot of gritty potting mix - it flowers non-stop from early summer to the first frost. If you are choosing between two places for it, take the harsher one.

It is also a tender perennial, not a true annual. In a frost-free or nearly frost-free spot it lives for years and slowly widens into a mat a foot or more across. Where winters freeze, the plant dies outdoors, but you can keep the same plant going indefinitely from cuttings taken in late summer. Treating it as disposable is a habit, not a requirement.

Sun is not negotiable, and shade is a wasted plant

Gazania flowers open in response to strong light and warmth. In full direct sun the flowers spread wide from mid-morning until late afternoon. In shade they simply do not open, and in a bed that gets sun for only three or four hours a day you will have a plant covered in tight closed buds that a visitor would read as dead or diseased. That is the single most common disappointment with this plant, and it is not a fault you can correct by feeding or watering.

Aim for a minimum of six hours of direct sun, and eight or more if you can. A south- or west-facing position, with heat radiating off paving, gravel or a wall, gives the best display. A north-facing bed, the shady side of a hedge, or a spot under a tree canopy will not work no matter how good the soil is. If the only place you have is shaded for much of the day, choose a different plant rather than trying to make gazania cope.

Wind and rain matter less than light but still register. In a long dull wet spell the flowers stay shut for days at a time and the plant looks sulky. That is normal behavior and not a sign of trouble; the flowers reopen with the next bright morning.

Closed flowers in the evening, in cloud, or in shade are completely normal. Judge a gazania's health by the leaves and the number of buds coming, not by whether the flowers happen to be open when you look at it.

Soil, water and feed: keep all three lean

Gazania wants free-draining, low-fertility soil. Sandy, stony or gravelly ground is ideal. If your soil is heavy, work in coarse grit or sharp sand and plant on a slight mound so the crown sits above the surrounding level, because water standing around the crown in cool weather is what kills established plants. Do not dig in large quantities of compost or well-rotted manure; that produces leaves at the expense of flowers and holds far more moisture than the plant wants.

Water new plants for the first two or three weeks until they take hold, then cut back sharply. An established gazania in the ground rarely needs watering at all except in a long drought, and even then a deep soak every ten to fourteen days is plenty. Plants in pots dry out faster and need more, but the rule is still to let the top two inches (5 cm) go properly dry before watering again. If you are watering it as often as you water your tomatoes, you are watering it far too often.

Feeding follows the same logic. One light application of a low-nitrogen general fertilizer in late spring is all a bed needs for the season. Containers can take a half-strength high-potassium liquid feed once a month during flowering. Rich nitrogen feeds are actively harmful: they give you a fat green rosette, floppy leaves and almost no flowers.

Deadheading is the work that keeps it flowering

Gazania sets seed readily, and a plant that is allowed to seed slows its flower production noticeably within a couple of weeks. Deadheading is therefore not tidying-up, it is the main maintenance job of the season. Go over each plant every three or four days through the flowering months and remove every spent head.

Cut or pinch the flower stalk right down at its base where it emerges from the rosette, not just below the head. A stub left standing looks untidy, dies back slowly and gives rot a place to start in wet weather. The stalks snap cleanly between finger and thumb when the flower is finished, so you rarely need tools.

By late summer plants that have flowered hard often look sprawling and open in the center. Trimming the whole plant back by about a third at that point, and removing any long bare stems, brings a fresh flush of compact growth and a second wave of flowers that carries on until the cold arrives. Do not cut into the woody base; work above the point where leaves are still growing.

What to write down

Two records make next season much easier. First, note where in the garden each plant sat and roughly how many hours of direct sun that spot got in midsummer, alongside how well the plant flowered. After one season you will have a map of which parts of your garden are actually hot enough for gazania, and you will stop putting it in the places that never worked.

Second, record the date of the first open flower, the date you cut plants back in late summer, and the date the display finally stopped. Those three dates tell you whether your cut-back was early enough to be worth doing, and how many weeks of flowering you are really getting. Add the date of the first frost that killed plants outdoors, and the date you took cuttings, so you know how much time you had between the two.