When and how should hives be treated against varroa?
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Pharmacy technician ·
Treating hives against varroa has become essential. Varroa destructor is a highly dangerous parasite for bees. It weakens colonies and spreads viruses that can cause an entire hive to collapse. To effectively protect your bees, it is important to know when and how to treat varroa.
In this article, you will find the best times to act, the recommended treatment methods, as well as a selection of effective products available on Produits-Veto.com.
Why treat hives against varroa?
Varroa attacks adult bees and brood. It feeds on their hemolymph (their "blood") and makes them more vulnerable to disease. Without treating hives against varroa, a colony can collapse within a few months.
To avoid this, it is essential to:
- Reduce the varroa population
- Preserve the health of the colony
- Limit the spread of viruses
- Promote a good recovery in spring
When to treat hives against varroa? The key periods
It is best to treat at least twice a year, at strategic moments in the colony's cycle.
1. After harvest, in late summer
Once the supers are removed (August to September), treat your hives before winter. This allows the bees to overwinter in good conditions.
Why now?
Bees born during this period must live for several months. They therefore need to be healthy, free of parasites.
Recommended products:
- VarroMed (formic + oxalic acids)
- Apiguard (thymol)
- Apilife Var
- Apivar
2. In winter, when brood is absent
In winter (December to January), the hive no longer contains brood. Varroa mites are then all on the adult bees. This is the ideal time for a targeted treatment.
Recommended product:
- Api-Bioxal, based on oxalic acid
- Oxybee
How to treat varroa? The main methods
There are several ways to fight varroa. The choice depends on your beekeeping practice and the conditions of your apiary.
1. Natural treatments
They use substances of natural origin, such as organic acids or essential oils. They are compatible with organic beekeeping.
Examples:
- Oxalic acid (Api-Bioxal)
- Formic acid (VarroMed)
- Thymol (Apiguard, Apilife Var)
These products are effective if used at the right time, respecting the recommended temperatures.
2. Chemical treatments
They are very effective but must be used with caution to avoid the development of resistance.
Common active ingredients:
- Amitraz
- Flumethrin
- Coumaphos
Some of these treatments require a veterinary prescription.
3. Mechanical methods
They do not replace a treatment, but they can reduce varroa pressure.
Examples:
- Queen caging to block brood
- Removal of drone brood, often more infested
- Varroa counting to monitor infestation
Check out our range dedicated to beekeepers now.
Frequently asked questions – FAQ
When to treat hives with Varromed?
VarroMed can be used all year round, even in the presence of brood. It is often recommended at the end of summer or in spring depending on the level of infestation.
How many times should you treat against varroa?
It is recommended to treat twice a year: after the last harvest and in winter. If parasitic pressure is high, a spring treatment may be considered.
Can several treatments be combined?
Yes. It is even advisable to alternate products to prevent varroa mites from becoming accustomed to a single molecule.
Are natural treatments as effective as chemical treatments?
They can be, especially when well applied and used preventively. However, their effectiveness often depends on conditions (temperature, absence of brood).
In conclusion, varroa treatment is an essential pillar of bee health. By combining good timing (summer and winter), suitable methods, and quality products, you maximize your chances of maintaining strong and resistant colonies.
On Produits-Veto.com, we support you with reliable, tested solutions adapted to all types of beekeeping.
