Tuesday, December 14, 2021

Organic Hemp Pest Control and Anolis carolinensis (Florida's Green Anole)


Lately we've focused on discussing some of the many ecosystem variables associated with hemp (Cannabis sativa) cultivation in an effort to understand how to grow hemp organically, without the need for chemical pesticides and herbicides that may be implicated in toxic or carcinogenic potential.

The green anole is an important member of organic IPM efforts for hemp crops

Today we will briefly discuss one particular lizard, Anolis carolinensis, the common green anole.  The green anole is an insectivore and a native lizard here in the southeastern US.  But what is the difference between lizards and anoles?  Are anoles lizards or are lizards anoles?  

The green anole is a member of the Dactyloidae family, a group sometimes classified as a subgroup of the Iguanidae family (Iguanas).  Anoles and Iguanas are both considered to be 'lizards'.  Anoles range in size from small to large.  

Though native to North America the small green anole is also recognized as an invasive species in eastern countries such as Japan.  But here in Florida Anolis carolinensis is considered a beneficial native lizard.

Importantly to the hemp grower, the green anole is a highly beneficial ecosystem component to include when developing an organic integrated pest management plan.  Although any wildlife, insect or bird can be a vector for diseases that may affect hemp, Anolis carolinensis offers more benefits than risks to the grower.  With their big appetite for pest bugs green anoles can be a beneficial partner, on duty twenty four seven (I've seen them feeding at night), always looking to devour smaller pest organisms.


Organic Hemp Cultivation,  Anolis carolinesis's throat fan

Unfortunately for the hemp farmer and for the native green anole, a larger anole has appeared in Florida.  This also hungry, larger, invasive anole is known as the Cuban brown anole, Anolis sagrei.  Though native to Cuba and the Bahamas, the Cuban brown anole has spread through the Southeastern US by laying eggs in horticultural potted plant soil.

Unfortunately for the native green anole, the larger Cuban brown anole is a predator who loves to dine on green anoles.  But because the Cuban brown anole is significantly larger and heavier, the Cuban brown anole generally avoids heights.
Green anole quickly eats the pest housefly; Organic IPM in action!

Heights however are a preferred foraging and communal area for the native green anole.  The more plant matter growing above, say one meter, the better for the green anole.  Vertical green, especially in the form of native vines such as: Carolina jessamine, Gelsemium sempervirens; Coral honeysuckle, Lonicera sempervirens; and Virginia creeper, Parthenocissus quinquefolia grow above the larger Cuban anole's normal roaming territory and provide a safe-haven of vertical green to the hemp farm's green anoles.

So by adding what we call 'Vertical or Volumetric Green' to the hemp garden, the grower is providing the Florida green anole with a place to escape predators and contribute to organic hemp cultivation IPM by devouring flies, aphids, caterpillars and more.

The photo sequence here starts with a green anole resting on the palmetto frond siding of a chickee attracting flies (and female anoles) with his 'dew lap' or 'throat fan'.

Green anoles play an important role in organic integrated pest management programs.

The fly, Musca domestica, soon lands and the always searching for bug anole grabs and eats the first fly of many for the day.  This seemingly insignificant act of predation is so important to hemp IPM.  Common house flies are a significant vector of diseases that may affect hemp.  Flies frequently regurgitate their stomach contents and leave fecal matter after landing on a hemp bud.  Salmonella, aspergillus and other noxious organisms can be spread through hemp crops by house flies. Because the green anole eats copious numbers of house flies daily, they contribute to positive hemp crop ecosystem criteria.

Nature is constantly providing examples of how ecosystem matrices and integrated pest management function. 

The Florida green anole and native plant species that provide communal habitat for the anoles are two very important components of a successful organic hemp integrated pest management system.  Ultimately, both the grower and consumer benefit from organically grown hemp.  First, the consumer benefits from the organically grown hemp because the product is free from pesticides and industrial type chemicals that may be toxic or carcinogenic.  Second, the grower can command higher prices for their crops due to the demand for healthier organic products.

Learning to understand the variables in a hemp farm's ecosystem matrices can be a complex undertaking yet the efforts will pay big dividends in sustainability, quality product, health and biodiversity. 

Shout out to Anolis carolinensis! 

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