Bacillus Thuringiensis Kurstaki - 25g Pouch
Bacillus thuringiensis kurstaki (Btk) is a subspecies of the Bacillus thuringiensis bacteria. It is widely used as a biological control for lepidopteran pests, such as caterpillars, gypsy moths and cabbage loopers. Btk works by producing proteins that are only toxic to this group of insects once they ingest it. It is considered safe for non-target organisms, including birds and beneficial insects, as it primarily affects specific caterpillar species.
32000 International Units Bacillus thuringiensis subspecies kurstaki (H-3a, 3b HD1)/mg in the form of a water dispersible granule
How it works:
When caterpillars ingest Btk, the bacterium produces crystalline proteins (Cry toxins), these toxins bind to receptors in the caterpillar’s gut, causing cell lysis and gut paralysis. The pest stops feeding and dies within a few days.
Benefits:
- Non-toxic to humans, pets, birds, bees, and most beneficial insects.
- Breaks down naturally in sunlight and soil, leaving no harmful residues.
- Compatible with organic production systems and often used as part of integrated pest management (IPM).
Instructions:
- Withholding period is - 0 days
- Use rate from: 0.25grams/litre - 0.50grams/litre, apply via a foliar spray
-
Apply as a high-volume foliar spray to the point of runoff. Full leaf coverage is essential.
- Spray in the evening or early morning to protect spores from UV degradation.
- Avoid application if rain is expected within 8 hours.
- Reapplication: Repeat at 7–14 day intervals or as needed, depending on pest pressure and weather.
*Disclaimer: This product is supplied for general horticultural and research use only. This product contains the same strain of Bacillus thuringiensis kurstaki (Btk) that is used registered biological pesticide in New Zealand. Our product has been repackaged into smaller sizes for your convenience, because it no longer comes in the original bag, we cannot market this as a pesticide.
Includes:
- 25grams of dry powder
- Makes between 50-100 litre of RTU mix, depending on the total concentration used
Let customers speak for us
from 85 reviews
<div class="dynamic-checkout__content" id="dynamic-checkout-cart" data-shopify="dynamic-checkout-cart"> <shopify-accelerated-checkout-cart wallet-configs="[{"name":"shop_pay","wallet_params":{"shopId":58123845819,"merchantName":"Growers Hub","personalized":true}}]" access-token="9b818b545a8b14a14929c22f853a93f9" buyer-country="NZ" buyer-locale="en" buyer-currency="NZD" shop-id="58123845819" cart-id="261c56f997740e642e7f7b0ad6db77a3" > <div class="wallet-button-wrapper"> <ul class='wallet-cart-grid wallet-cart-grid--skeleton' role="list" data-shopify-buttoncontainer="true"> <li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li> </ul> </div> </shopify-accelerated-checkout-cart> <small id="shopify-buyer-consent" class="hidden" aria-hidden="true" data-consent-type="subscription"> One or more of the items in your cart is a recurring or deferred purchase. By continuing, I agree to the <span id="shopify-subscription-policy-button">cancellation policy</span> and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. </small> </div>
Secure payments
