Each Unit Contains ~250 Weevils, a combination of Microlarinus lareynii and Microlarinus lypriformis. Puncturevine Weevils control Puncturevine weeds (Tribulus terrestris), which are also known as Goatheads, Texas Sandburs, or Jamaica Feverplants. Puncturevine weevils are only available July 1 to approximately September 30th each year.
- Order the weevils and release as soon as green seed burs have formed.
- After release, do not disc or disturb the plants or apply herbicide. This destroys their food and they will die.
- The weevils are host specific and will not eat other plants or weeds.
Be Patient! It may take up to 2 years to reduce the puncturevine weed numbers in your fields. Once established, the weevils will control the puncturevine - a few old seeds may sprout and grow, but the new plants will not make viable seeds nor will the plants spread as rapidly.
Important Shipping Information:
- Puncturevine Weevil ships on Tuesday only.
- Orders received by close of business on Mondays will ship Tuesday of the following week.
- Shipments are made via 2nd Day Air only
- Order and release as soon as green seed burs have formed.
- After release, do not disc or disturb the plants or apply herbicide. This destroys their food and they will die.
- The weevils are host specific and will not eat other plants or weeds.
Be patient! The puncturevine weevil is a long-term solution It may take two years to reduce puncturevine weevil populations. Once established, the weevils will control the puncturevine - a few old seeds may germinate and grow, but the new plants will not make viable seeds nor will the plants spread rapidly.
Application Rate:
- Release 1 - 2 units per acre, depending upon level of infestations.
- Repeat applications may be necessary.
Important Shipping Information:- Puncturevine Weevil ships on Tuesday only.
- Orders received by close of business on Mondays will ship Tuesday of the following week.
- Shipments are made via 2nd Day Air only
Cannot Be Shipped To: HI,PR,VI,GU,AS,PW
What's In The Package: There are two types of weevils mixed in each shipment. One variety is an adult seed weevil. The female deposits eggs in the green seed bur and seals them in. The insects hatch and burrow into the green seeds. As they develop, they eat the seed so it cannot sprout.
The other weevil is the stem weevil, which eats the stem of puncturevine, keeping it from growing or spreading.
Each female adult weevil will lay 200-500 eggs, depending on temperature and puncturevine availability. (The more they have to eat, the more they reproduce). The entire life cycle is 18-30 days and will continue until cool weather causes the weevils to go dormant. Each unit contains approximately 250 weevils.
