Thursday, December 23, 2021

Organic Hemp Pest Control, a Native Plants & Songbird Partnership

 Last post we discussed the important roles wild birds have in organic based pest control for hemp cultivation.  

Ruby throated hummingbird, Archilochus colubris attracted to the many native plants of Arendell Hill Nursery, feeds on nectar & tiny insects
Today's post will consider what the hemp grower can do using native plant species to attract and manage birds interactions with the cannabis farm.

As we previously read, a wild songbird partnership begins with native plant landscaping.  Birds have always sought out native plant species for foraging, communal and safe harbor habitat.  Native plant species are their first choice when they are deciding to take up residence on a site.  This also holds true for raptors and migratory birds.  The connection with native plants lies deep within all birds DNA, a quid pro quo arrangement formed during earth's deep time.

Certainly non-native horticultural type plants may be popular and even attractive, however they do not offer the level of wild bird provisions afforded by native plant species.  This is a proven fact.  Moreover, non-native horticultural plants may also provide unwanted hemp pests a place to proliferate and do harm to native plant species through hybridization and even DNA alteration.  

Many non-native plants can quickly spread across the landscape, their seeds dispersed by winds, wildlife and human activity.  An organic hemp farmer will need to be able recognize invasive plants, such as Coral Ardisia, Ardisia crenata, or air potato vine, Dioscorea buldifera  and implement control actions to stop the non-native's spread throughout the hemp agriculture site.

Importantly, one of the keys to high terpene content in flower buds of any variety is a high level of biodiversity and complexity in the surrounding ecosystem matrix.  Non-native species reduce biodiversity, sometimes drastically.  The coral ardisia and air potato vines mentioned above are one particular threat to hemp farms because invasive plants can quickly displace hundreds of native plant species that previously existed within the hemp ecosystem matrix depleting biodiversity and throttling production of complex terpene expression in hemp flowers.

Complexity of terpenes in hemp due to biodiversity is what makes a flower special.  When a flower is desirable to the consumer, demand and sales increase.  High quality hemp is the goal of most growers.  By attracting cultivation site songbirds and planting a diverse landscape of native plants the grower gains more control over unwanted pests and also increases the quality of the hemp product by keeping cultivation site biodiversity high.  The songbird-ecosystem matrix complexity-terpene-hemp plant relationship is a very important grow optimization concept for the farmer to explore. 

History is full of examples of plants providing humans with amazing phytochemicals, substances rich in healing properties.  For instance, yaupon holly, Ilex vomitoria contains caffeine and many terpenes too.  Songbirds love to eat holly berries.  Yaupon also provides a home across its bark for countless different species of lichens and mosses.  Older yaupon plants support a complexity of fungi and mushrooms.  All of these ecosystem variables; the fungi, the lichens, mosses, birds, plant and wildlife litter interact together to help form a web of ecosystem matrix diversity that is essential to comprehensive terpene creation in hemp and other plants.

Native plants have evolved over the ages alongside soil formation, fungi & lichens, plants, weather trends, insects, birds, fish, lake, river and stream creation and flow, climate changes and other biological and geophysical factors. The ecosystems we are a part of today were fashioned and shaped through millennia, a result of 'trial and error' over vast expanses of time.

Native ecosystems are the product of natures long term refinement processes.  In fact the time factor nature has invested into forming the ecosystems around us is so vast that it is practically impossible for us to comprehend what has taken really place.

The result of these evolutionary process can be witnessed in the precisely balanced interactions associated with native ecosystems.  Natural checks and balances keep seasonal life cycles functioning smoothly.  This way no one or two life types becomes over abundant or out of control. 

So for the hemp farmer, outdoor growing can expose hemp plants to geophysical and biological variables that may activate both biological and epigenetic process resulting in increased terpene production and diversity. Many terpenes important to humans for cosmetic, pharmaceutical, agricultural and food purposes are synthesized by plants as responses to outside influences, or ecosystem variables.  Some of these may be related to the ecosystematic complexities surrounding presence of native plants, insects, fungi, birds and wildlife.

A strategically designed native plant filled landscape not only provides the basis for increased terpene development but also serves as the foundation for organic integrated pest management purposes.

Once native flora is established, birds will make themselves at home and begin to assist in managing insect populations.

I've found the following native plant species to be especially helpful in recruiting songbirds, raptors and other wild birds.

Shrubs and small trees:

  • Wax myrtle, Morella cerifera
  • Yaupon holly, Ilex vomitoria
  • American holly, Ilex opaca
  • Gallberry, Ilex glabra
  • Elderberry, Sambucus nigra
  • Firebush, Hamelia patens
  • Beautyberry, Callicarpa americana
  • Hoptree, Ptelea trifoliata
  • Coontie, Zamia integrifolia
  • Red mulberry, Morus rubra
  • Seagrape, Coccoloba uvifera & Pigeon plum, C. diversifolia (cold tender)
  • Groundsel tree, Baccharis halimifolia
  • Paurotis palm, Acoelorraphe wrightii (cold tender)
  • Coco plum, Chrysobalanus icaco (cold tender)
  • and many more.
Native tree species to plant for birds are:

  • Oaks, such as;
    • Live oak, Quercus virginiana
    • White oak, Quercus alba
    • Myrtle oak, Quercus myrtifolia
    • Shumard oak, Quercus shumardii
    • Swamp chesnut oak, Quercus michauxii
    • and many more
  • Red maple, Acer rubrum
  • Hickory, including
    • Mockernut hickory, Carya tomentosa
    • Pignut hickory, Carya glabra
    • Black walnut, Juglans nigra
    • and others
  • Magnolia, Magnolia grandiflora
  • Black gum, Nyssa aquatica
  • Cypress, Taxodium distichum & T. ascendens
  • Pines species:
    • Sand pine, Pinus clausa
    • Slash pine, Pinus elliottii
    • Spruce pine, Pinus glabra
    • Longleaf pine, Pinus palustris
    • Loblolly pine, Pinus taeda
  • Sabal palm, Sabal palmetto
  • Sycamore, Platanus occidentalis
  • Tulip popular, Liriodendron tulipifera
  • Silver buttonwood, Conocarpus erectus
  • Mangroves;
    • Black mangrove, Avicennis germinans
    • Red mangrove, Rhizophora mangle (cold tender)
    • White mangrove, Laguncularia racemosa (cold tender)
  • and so many others
Native plant societies, wildflower associations, local agricultural extension agencies and native nursery business associations are all excellent information resources on what species to use and how to plant and care for native plants.

Here in Florida, the following entities can provide important growing info about native plants;
Hemp farm landscaping should always be included during initial hemp growing planning considerations. Native plant focused landscapes should be installed concurrent with any hemp cultivation efforts.

The organic hemp farmer needs all available help with pest control.  Hemp agriculture will demand significant amounts of time from the grower.  Native plants can serve as hosts to nature's own great pest control specialists.

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