Sulphur Dust Powder 4kg – Natural Fungicide & Miticide for Garden Plants

Sulphur Dust Powder 4kg: Natural Mildew and Mite Control in a Larger Pack

Sulphur dust is one of the oldest and most trusted natural garden treatments, used to control fungal diseases like powdery mildew, rust and black spot, along with mites, across a wide range of plants. This 4kg pack is elemental sulphur in a fine dusting powder, and the larger size suits bigger gardens, orchards and growers who go through more of it or treat a lot of plants through the season. It's packaged here by Bonnyrigg Produce & Garden Supplies, and as a naturally occurring mineral it's a good fit for gardeners wanting a traditional, non-synthetic option.

Sulphur works on contact rather than systemically, forming a protective layer on the plant surface that stops fungal spores establishing, which is why it works best applied early as a preventative before disease sets in. The same properties make it effective against mites. It's used across home gardens, horticulture and orchards, and it also has a role as a soil amendment for lowering pH, though as a dust its main garden use is protecting foliage.

Key Details

• Natural elemental sulphur in a fine dusting powder
• Controls fungal diseases including powdery mildew, rust and black spot
• Also controls mites
• Works on contact as a protective barrier, best used preventatively
• Larger 4kg pack, suited to bigger gardens and orchards
• Suits home gardens, horticulture and commercial growing

What It's Used For

• Powdery mildew on plants like grapes, roses, cucurbits and ornamentals
• Rust and black spot on susceptible plants
• Mite control on garden plants
• General preventative disease protection across a larger planting or orchard

How to Apply It

Dust the powder lightly and evenly over the plant, covering both the upper and lower leaf surfaces so the protective layer sits where fungal spores and mites are. A dusting applicator gives the most even coverage over a lot of plants. Apply early, as a preventative, and reapply through the season as needed, since it's a contact treatment that washes off with rain and watering. To avoid leaf damage, don't apply in hot weather above about 30°C, don't use it on plants that are moisture-stressed, and don't apply it within a few weeks of an oil spray such as white oil, since sulphur and oil together can burn foliage.

Safety and Handling

Sulphur is a low-toxicity, natural product, but as a fine dust it should be handled sensibly. Avoid breathing in the dust and wear a dust mask when applying, particularly on a still day, and keep it out of your eyes. It's combustible as a fine powder, so keep it away from open flames and sparks, and store it in a cool, dry place in a sealed container out of reach of children and pets. Wash your hands after use.

Frequently Asked Questions

What is sulphur dust used for?
It controls fungal diseases like powdery mildew, rust and black spot, and mites, on a wide range of garden plants.

Why choose the 4kg pack?
The larger size suits bigger gardens, orchards and growers treating a lot of plants, giving you more product to keep up preventative treatments through the season.

How do I apply it?
Dust it lightly and evenly over the foliage, covering both leaf surfaces, ideally with a duster. Apply early as a preventative and reapply as needed.

When should I avoid using it?
Avoid applying in hot weather (above about 30°C), on moisture-stressed plants, or within a few weeks of an oil spray like white oil, as sulphur and oil together can burn leaves.

Does it work on insects?
Its main uses are fungal disease and mite control. It's not a general insecticide, so for insect pests a product designed for them is a better fit.

Where can I buy sulphur dust powder in Australia?
It's available from BPG Supplies (Bonnyrigg Produce & Garden Supplies), with local pickup in Bonnyrigg NSW and delivery across Australia.