THANK YOU FOR INTEREST

In our Black Soldier Fly products.

Our products will be available within a few days.

— Visit us at the end of June —

Featured Product

Black Soldier Fly Eggs

Black Soldier Fly Eggs

Black Soldier Fly Eggs – Gren Fox  We are a specialized supplier of black soldier fly products in Poland. BSF eggs produced by us are of the highest quality, guaranteed to hatch. 1 gram of eggs produce about 3-4 kg larvae.      If you decide to buy our eggs, we guarantee a safe shipment. All items will be securely packaged into styrofoam boxes. We guarantee a safe shipment, but keep in mind that Our shippment supports Europe countries only! For more information, we encourage You to contact us: m.zdunek@grenfox.com   Price per 1 gram - 29 EUR Shipping fee – 100 EUR
€29.00

Custom Product

Our shippment is supported
to EUROPE countries only

GREN FOX

Gren Fox is a Polish manufacturer of professional solutions for cultivating ecological, wholesome and healthy plants. We employ 150 people who make sure that our products meet the requirements of our customers in terms of reliability, performance and competitiveness on the market.We are not satisfied with what the modern world offers us..
This is why we want to give you the opportunity to choose between vegetables full of harmful chemicals and our own, wholesome, organic BIO products. At the same time, aware of the ever growing ECO trend in professional horticultural production, we have prepared an offer also for larger, industrial scale production. 

Learn more

Join Our Maling List

By clicking on the button you agree to our Privacy Policy.

Frequently Asked Questions

How much and how frequently should one load food scrap into a bioreactor to sustain the growth of BSF larvae under steady-state conditions?

This depends upon the composition of the food scrap waste, and to a fair extent on the density of larvae seeded into the bioreactor. Optimal conditions can be determined empirically. For common food scrap made up of a mixture of carbohydrates, vegetables, fruit leftovers (including melon rinds and peelings), scraps of meat  and bone fragments (including fish offal), etc., a generally good rule of thumb in loading and maintaining a bioreactor is to aim for a loading rate of approximately 15 Kg per square meter bioreactor space per 3 day cycle.

Can you expose BSF larvae to the sun or do they prefer shaded areas or semi-exposed areas?

BSF larvae are photophobic (light fearing) and prefer to feed and grow in places shielded from direct sunlight. In open recycling bins they will burrow under layers of food scrap or waste material to escape direct exposure to light. Adult BSF prefer sunlight and warm temperatures to mate. Males hang out in shaded areas and mate with females in mid-flight. Females prefer to lay eggs in dark crevices hidden from direct sunlight. Recycling bins should be located in semi-exposed areas. Direct and prolonged exposure to sun can cause food scrap and compost recycler bins to overheat inducing heat stress among larvae driving them out of the bins.

How long does it take from receipt of BSF larvae before they become adult flies? How long is the BSF life cycle?

It typically takes about two weeks at around 85 F (~30 C), a little longer under cooler temperatures, for larvae to grow from newly hatched larvae to their sixth instar (final molting stage) at which point they emerge from decaying waste as prepupae seeking a dry dark place to pupate and transition into an adult BSF. It takes another roughly two weeks from the prepupae stage before they emerge from their puparia as adults. Over the next 4 to 5 days as adults they seek a mate before dying off. Females lay eggs near decaying waste which hatch in 3 to 4 days starting the cycle over again.

Will BSF larvae damage my plants growing in my vegetable garden, especially if they escape from my food scrap recycling bin?

No! BSF larvae feed solely on dead decaying organic matter. They do not feed on living plants or root systems and instead seek out decaying organic debris, feeding on the organic byproducts, decaying cells and microbes present in waste materials susceptible to decomposition. BSF larvae are incapable of directly breaking down and digesting cellulose, the most abundant carbon material on earth. So long as a plant is living and not undergoing decay, BSF larvae have no means of growing off of the plant. Once a plant dies, microbes capable of breaking down cellulose provide a means for BSF larvae to access the nutrients in the plant.

Are adult BSF harmful, for example, do they spread diseases?

No! They do not feed on organic matter, and they do not pick up and transmit infectious bacteria. They are classified by the USDA as a non-pest insect. Unlike the common housefly, adult BSF do not fly from one waste pile to another as they seek out a mate during their adult life cycle. They furthermore do not bore into plants in laying eggs. The live no longer than a few days to upwards of a week while seeking a mate, and after mating, lay their eggs near decaying waste, usually in nooks and crannies protected from direct sunlight, then die off, leaving the next generation to then hatch and carry on the same life cycle.