Gardenia Jasminoides attributes

Size

60cm – 90cm

Flowers

Spring – Summer

Growth Rate

Medium

Origin

Maintenance

Hardiness

Caring for Gardenia Jasminoides

When to plant

It is best to transplant / plant Gardenia jasminoides once the weather approaches summer temperatures.

How to plant

Select a spot in your garden that receives semi-shade or full morning sun. In very hot regions the Cape Jasmine will prefer some shade in the summer, particularly during the hottest part of the day. In cooler regions, they will flourish in full-sun spots.

Ensure that the selected spot is protected from strong winds and that the soil drains well. Prepare the planting hole well, ensuring that you’ve included ample compost and a dressing of bone meal.

Deadheading Gardenia Jasminoides

Cut spent (faded) flowers just below the leaf node to encourage continued blooming.

Pruning

Prune your Cape Jasmine when it is dormant (after it has flowered / in the winter) to promote compact growth or branching.

Watch this video to learn how to prune your Cape Jasmine: https://youtu.be/Qpb14zlvccQ

When to fertilise

Twice a year during the growing season (between November and February in the Southern Hemisphere)

Do not fertilise in autumn or winter.

How to Fertilise

Apply thick organic mulch around the root zone of the plant that will improve the soil quality and slowly feed the roots.

If your plant doesn’t produce any blooms, but has a thick lushy leaf growth, supplement the soil with a phosphorus water soluble fertiliser. (A fertiliser with a higher middle number).

A slow release fertiliser is also a good option for the busy gardener – scratch the grains of the fertiliser into the top 5 cm’s of the soil around the root zone of the plant and water in.

The Cape Jasmine can grow in clay, loam, and sandy soil with an acidic or neutral pH.

It is best grown in in moist, acidic, organically rich but well drained soils.

The Cape Jasmine will require an average amount of watering (once a week) with additional watering during dry and hot spells.

Be wary of overwatering as this may result in root rot.

Propagating Gardenia Jasminoides

Propagate Gardenia Jasminoides from seed or stem cuttings.

Propagating by cuttings

  1. Snip a 15-cm cutting from the stem tips of a healthy plant.
  2. Remove the leaves from the bottom half of the cutting and dip the tip in a rooting hormone powder.
  3. Place the dipped end into a container of dampened sterile seed starting mix that drains well.
  4. Place the container in a warm spot (averaging 24ºC) with indirect sunlight and mist the cutting daily to ensure that the soil does not dry out.
  5. The cuttings should take root in about 4 weeks. Test for root growth by (very) gently tugging on the cuttings to feel if there is some resistance.
  6. Transplant the cuttings into individual 15-cm pots that contain professional potting mixture.

Troubleshooting Gardenia Jasminoides problems

Cape Jasmine is vulnerable to a variety of problems and pests.

Insects that affect the shrub include aphids, weevils, mealybugs, scale insects, nematodes, spider mites and white flies.

Diseases that affect the Cape Jasmine include root and crown rot.

If infested by scale insects, mealybugs and aphids, the Cape Jasmine is also vulnerable to sooty mould.

Benefits and uses of Gardenia Jasminoides

Refrences

  • https://www.gardenia.net/plant/gardenia-jasminoides
  • https://www.gardeninginsouthafrica.co.za/medium-sized-plants/gardenia-katjiepeiring-cape-jasmine-gardenia-augusta-previously-gardenia-jasminoides
  • https://www.gardeningknowhow.com/ornamental/flowers/jasmine/jasmine-propagation-tips.htm#:~:text=Jasmine%20cuttings,-If%20starting%20a&text=Make%20the%20cuttings%20about%206,plastic%20bag%20to%20hold%20moisture
  • https://www.gardeningknowhow.com/ornamental/flowers/jasmine/how-to-fertilize-jasmine.htm
  • https://homeguides.sfgate.com/information-cape-jasmine-gardenia-29321.html
  • By Adriel anv00 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=58527029