Name: Silver Shield Plectranthus
SKU: SSPLEC14
Availability: InStock

Commonly known as: Silver Shield Plectranthus

Botanical name: Plectranthus argentatus

The Plectranthus argentatus, or Silver Shield, is a fast-growing shrublet native to Australia, loved for its silvery, slightly fuzzy leaves and relaxed growth. It creates a soft, luminous mound that brightens shaded spots and pairs beautifully with deeper green plants. This variety grows quickly in warm weather and can be pruned or pinched to keep it compact.

It’s ideal for pots, hanging baskets, or groundcover in filtered light — a hardy, water-wise plant that thrives on minimal care.

Silver Shield Plectranthus Care Guide

Watering – How often should I water a Silver Shield Plectranthus?

Water regularly through summer to keep the soil lightly moist, but let the top few centimetres dry between waterings. Once established, it’s surprisingly drought-tolerant. Reduce watering in cooler months and avoid water-logging the roots.

Light – What light does a Plectranthus argentatus prefer?

It enjoys bright, indirect light or dappled shade. A little morning sun deepens the leaf colour, but harsh midday or afternoon rays can scorch the soft foliage. Indoors, a bright east-facing window is ideal.

Humidity – Does it need humidity?

Average household humidity is fine. Outdoors, it loves gentle airflow. If kept inside, ensure good ventilation and avoid placing it right next to heaters or air-cons.

Soil – What soil mix works best for Silver Shield Plectranthus?

For optimal drainage and healthy roots, use our Aroid Mix, or make your own using Barks Unlimited Potting Soil combined with Perlite. The mix should drain freely but retain a little moisture to keep roots hydrated.

Feeding – How often should I fertilise my Silver Shield?

Feed monthly in spring and summer with a mild Organic Fertiliser. For longer-term growth, mix in a little Controlled Release Fertiliser at the start of the season. Pause feeding in winter.

Repotting – When should I repot or prune it?

Repot every 12–18 months or when it outgrows its container. Trim or pinch back stems regularly to maintain a neat, bushy shape. Add a few Bark Chips to the potting mix to encourage airflow and sturdier roots.

Pests – Are Plectranthus plants prone to pests?

They’re generally pest-resistant, but aphids or whitefly may appear on tender new growth. Wipe the leaves gently and use an insecticidal spray if needed. Keeping air moving around the plant helps prevent problems.

Temperature – What’s the ideal temperature range?

Best between 18 °C and 28 °C. Protect from frost and cold drafts. It handles mild outdoor winters in frost-free areas but thrives year-round indoors or on covered patios.