Pollinator garden

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Milkweed in the Smithsonian Pollinator Garden, Washington DC Smithsonian Pollinator Garden in June (19274685058).jpg
Milkweed in the Smithsonian Pollinator Garden, Washington DC
Hood River Valley Public Pollinator Garden, Oregon Hood River Valley Public Pollinator Garden - 52098202667.jpg
Hood River Valley Public Pollinator Garden, Oregon
Sugarlands Visitor Center Pollinator Garden in Great Smoky Mountains National Park, Galinburg TN Sugarlands Visitor Center Pollinator Garden, May 2018--Andrea Walton (41173590290).jpg
Sugarlands Visitor Center Pollinator Garden in Great Smoky Mountains National Park, Galinburg TN
Pollinators feeding on an anise hyssop garden in Massachusetts Bumblebees on anise hyssop.jpg
Pollinators feeding on an anise hyssop garden in Massachusetts
Pollinator Garden- Victoria, British Columbia Flower-arrangement-victoria-BC.jpg
Pollinator Garden- Victoria, British Columbia
Example of Pollinator Garden Variety Reykjavik, Iceland Colorful flowers (2717762652).jpg
Example of Pollinator Garden Variety Reykjavik, Iceland

A pollinator garden is a type of garden designed with the intent of growing specific nectar and pollen-producing plants, in a way that attracts pollinating insects known as pollinators. [1] Pollinators aid in the production of one out of every three bites of food consumed by humans, and pollinator gardens are a way to offer support for these species. [2] In order for a garden to be considered a pollinator garden, it should provide various nectar producing flowers, shelter or shelter-providing plants for pollinators, and avoid the use of pesticides. [3] [4]

Contents

Background

A pollinator garden is a group of plants grown together with the intention of attracting wild pollinators. Pollination is the reproductive process that enables plants to produce seeds. [5] When pollen from the male part of one flower is moved to the female part of another flower of the same species, fertilization occurs. [5] [6] Once fertilized, a flower produces fruit and seeds. Some plants are pollinated by wind or water, but the majority are pollinated by animals called pollinators. [7] By producing nectar to attract pollinators, plants encourage to move from flower to flower, carrying pollen with them and resulting in pollination. [6] Close to 90% of all flowering plants are pollinated by animals. [8] A vast majority of these pollinator species are insects, such as bees and butterflies, but animal pollinators can also include certain species of birds and mammals. [7] [6]

Purpose

Pollinators play a vital role in human food production, and pollinator gardens are a way to support and protect essential pollinator species. Thirty-five percent of global food production is dependent on animal pollinators. [8] Over 150 food crops rely on pollinators, including most of the fruits, vegetables, and nuts grown in the United States. [6] Many pollinator species are currently threatened and in decline. In 2007, the National Research Council concluded that 40% of all insect pollinator species are currently at risk of extinction. [9] Causes of pollinator decline include habitat loss, pesticide exposure, and loss of food sources due to the spread of non-native plant species. [9] If pollinator habitats are not protected and new habitats are not created, the lack of plant pollination will ultimately affect humans. As pollinators decline, agricultural yields do as well. [10] Without pollination, the main sources of human nutrition will suffer. [11] [12] Further, it is not just crops that are in danger, because 80-95% of non-crop plant species require some form of pollination as well. [13] However, research shows that when the proportion of native pollinator plants in an area increases, so too does pollinator activity. [8] Pollinator gardens are a way for these habitats to remain protected and encourage pollinators to continue pollinating plants around the world.

Planting considerations

There are several considerations to keep in mind when planting pollinator gardens. Depending on what sorts of pollinators a gardener is hoping to attract, be it birds, bees, or butterflies, nectar, pollen, and larval-host plants appropriate for these species should be chosen. [7] [14] Gardeners are also encouraged to choose native plant species. A plant is considered to be a native species if it occurs naturally in a particular region or habitat without human introduction. [7] Native plants have evolved to be best adapted and suited for the particular climate and growing conditions in which they are found and have often developed pollinator-specific relationships (i.e. monarch butterflies and milkweed). [6] [7] Additionally, choosing native plants ensures that surrounding native plant populations will not be outcompeted by introduced species. [15]

It is also necessary to remember that different plants require different amounts of sunlight, water, and space. If a pollinator garden is damp and shady, plants adapted to sunny, dry conditions will not thrive there. Some plant species will spread aggressively, which is not ideal for small spaces. Similarly, container gardens are great for small spaces, but be sure to choose shallow-rooted species. [16] The U.S. Fish and Wildlife Service also suggests that gardeners choose a variety of plants that flower at different times of the year. [6] This not only provides nectar and pollen sources for pollinators throughout the growing season but also adds season-long visual interest. [6] [7] Further, it is important that pollinator gardens include structural elements such as nesting boxes and water sources to further support the complex life cycle of pollinators. [14] Garden maintenance, such as mulching, weeding, and clearing, should also be timed appropriately so as not to interrupt particular pollinator life stages. [17]

National Pollinator Garden Network

In 2015 the (American) National Pollinator Garden Network launched its Million Pollinator Garden Challenge which encourages the entire nation to become aware of pollinators and their role. [18] This challenge hopes to raise awareness so that existing habitats may be preserved and new habitats may be created. This project aims to help people understand the important role that pollinators play and why it is important to protect them.

Legislation

Pollinator gardens are now making their way into politics. In 2015, the American Society of Landscape Architects (ASLA) joined forces with New York Senator Kirsten Gillibrand to encourage pollinator habitats on transportation right-of-way. This bill will be close to that of the bill H.R. 2738, the Highways Bettering the Economy and Environment Pollinator Protection Act [19]

In June 2017, The House of Representatives moved the bill H.R. 3040. In Section 1. of the bill says that the Act may be referred to as "Saving America's Pollinators Act of 2017" This bill calls upon the Environmental Protection Agency (EPA) to take actions against particular pesticides that may negatively impact pollinators. [20]

Examples

See also

Related Research Articles

<span class="mw-page-title-main">Pollinator</span> Animal that moves pollen from the male anther of a flower to the female stigma

A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.

<span class="mw-page-title-main">Hover fly</span> Family of insects

Hover flies, also called flower flies or syrphid flies, make up the insect family Syrphidae. As their common name suggests, they are often seen hovering or nectaring at flowers; the adults of many species feed mainly on nectar and pollen, while the larvae (maggots) eat a wide range of foods. In some species, the larvae are saprotrophs, eating decaying plant and animal matter in the soil or in ponds and streams. In other species, the larvae are insectivores and prey on aphids, thrips, and other plant-sucking insects.

<span class="mw-page-title-main">Wildlife garden</span>

A wildlife garden is an environment created with the purpose to serve as a sustainable haven for surrounding wildlife. Wildlife gardens contain a variety of habitats that cater to native and local plants, birds, amphibians, reptiles, insects, mammals and so on, and are meant to sustain locally native flora and fauna. Other names this type of gardening goes by can vary, prominent ones being habitat, ecology, and conservation gardening.

<span class="mw-page-title-main">Pollination</span> Biological process occurring in plants

Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds, most often by an animal or by wind. Pollinating agents can be animals such as insects, birds, and bats; water; wind; and even plants themselves, when self-pollination occurs within a closed flower. Pollination often occurs within a species. When pollination occurs between species, it can produce hybrid offspring in nature and in plant breeding work.

<i>Cirsium</i> Genus of flowering plants in the daisy family Asteraceae

Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more precisely known as plume thistles. These differ from other thistle genera in having feathered hairs to their achenes. The other genera have a pappus of simple unbranched hairs.

<span class="mw-page-title-main">Nectar source</span>

A nectar source is a flowering plant that produces nectar as part of its reproductive strategy. These plants create nectar, which attract pollinating insects and sometimes other animals such as birds.

<i>Asclepias syriaca</i> Species of flowering plant

Asclepias syriaca, commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant. It is native to southern Canada and much of the United States east of the Rocky Mountains, excluding the drier parts of the prairies. It is in the genus Asclepias, the milkweeds. It grows in sandy soils as well as other kinds of soils in sunny areas.

<span class="mw-page-title-main">Entomophily</span> Form of pollination by insects

Entomophily or insect pollination is a form of pollination whereby pollen of plants, especially but not only of flowering plants, is distributed by insects. Flowers pollinated by insects typically advertise themselves with bright colours, sometimes with conspicuous patterns leading to rewards of pollen and nectar; they may also have an attractive scent which in some cases mimics insect pheromones. Insect pollinators such as bees have adaptations for their role, such as lapping or sucking mouthparts to take in nectar, and in some species also pollen baskets on their hind legs. This required the coevolution of insects and flowering plants in the development of pollination behaviour by the insects and pollination mechanisms by the flowers, benefiting both groups. Both the size and the density of a population are known to affect pollination and subsequent reproductive performance.

<span class="mw-page-title-main">Zoophily</span> Pollination by animals

Zoophily, or zoogamy, is a form of pollination whereby pollen is transferred by animals, usually by invertebrates but in some cases vertebrates, particularly birds and bats, but also by other animals. Zoophilous species frequently have evolved mechanisms to make themselves more appealing to the particular type of pollinator, e.g. brightly colored or scented flowers, nectar, and appealing shapes and patterns. These plant-animal relationships are often mutually beneficial because of the food source provided in exchange for pollination.

<i>Eryngium yuccifolium</i> Species of flowering plant in the celery family Apiaceae

Eryngium yuccifolium, known as rattlesnake master, button eryngo, and button snake-root, is a perennial herb of the parsley family native to the tallgrass prairies of central and eastern North America. It grows from Minnesota east to Ohio and south to Texas and Florida, including a few spots in Connecticut, New Jersey, Maryland, and Delaware.

<span class="mw-page-title-main">Nectar</span> Sugar-rich liquid produced by many flowering plants, that attracts pollinators and insects

Nectar is a sugar-rich liquid produced by plants in glands called nectaries or nectarines, either within the flowers with which it attracts pollinating animals, or by extrafloral nectaries, which provide a nutrient source to animal mutualists, which in turn provide herbivore protection. Common nectar-consuming pollinators include mosquitoes, hoverflies, wasps, bees, butterflies and moths, hummingbirds, honeyeaters and bats. Nectar plays a crucial role in the foraging economics and evolution of nectar-eating species; for example, nectar foraging behavior is largely responsible for the divergent evolution of the African honey bee, A. m. scutellata and the western honey bee.

<i>Hibiscus moscheutos</i> Species of aquatic plant

Hibiscus moscheutos, the rose mallow, swamp rose-mallow, crimsoneyed rosemallow, or eastern rosemallow, is a species of flowering plant in the family Malvaceae. It is a cold-hardy perennial wetland plant that can grow in large colonies. The hirsute leaves are of variable morphology, but are commonly deltoidal in shape with up to three lobes. It is found in wetlands and along the riverine systems of the eastern United States from Texas to the Atlantic states, its territory extending northward to southern Ontario.

<span class="mw-page-title-main">Butterfly gardening</span> Gardening to benefit butterflies

Butterfly gardening is a way to create, improve, and maintain habitat for lepidopterans including butterflies, skippers, and moths. Butterflies have four distinct life stages—egg, larva, chrysalis, and adult. In order to support and sustain butterfly populations, an ideal butterfly garden contains habitat for each life stage.

<i>Asclepias asperula</i> Species of flowering plant

Asclepias asperula, commonly called antelope horns milkweed or spider milkweed, is a species of milkweed native to the Southwestern United States and northern Mexico.

<i>Eriogonum fasciculatum</i> Species of flowering shrub

Eriogonum fasciculatum is a species of wild buckwheat known by the common names California buckwheat and flat-topped buckwheat. Characterized by small, white and pink flower clusters that give off a cottony effect, this species grows variably from a patchy mat to a wide shrub, with the flowers turning a rusty color after blooming. This plant is of great benefit across its various habitats, providing an important food resource for a diversity of insect and mammal species. It also provides numerous ecosystem services for humans, including erosion control, post-fire mitigation, increases in crop yields when planted in hedgerows, and high habitat restoration value.

<span class="mw-page-title-main">Palynivore</span> Group of herbivorous animals

In zoology, a palynivore /pəˈlɪnəvɔːɹ/, meaning "pollen eater" is an herbivorous animal which selectively eats the nutrient-rich pollen produced by angiosperms and gymnosperms. Most true palynivores are insects or mites. The category in its strictest application includes most bees, and a few kinds of wasps, as pollen is often the only solid food consumed by all life stages in these insects. However, the category can be extended to include more diverse species. For example, palynivorous mites and thrips typically feed on the liquid content of the pollen grains without actually consuming the exine, or the solid portion of the grain. Additionally, the list is expanded greatly if one takes into consideration species where either the larval or adult stage feeds on pollen, but not both. There are other wasps which are in this category, as well as many beetles, flies, butterflies, and moths. One such example of a bee species that only consumes pollen in its larval stage is the Apis mellifera carnica. There is a vast array of insects that will feed opportunistically on pollen, as will various birds, orb-weaving spiders and other nectarivores.

<i>Filipendula rubra</i> Species of flowering plant

Filipendula rubra, also known as queen-of-the-prairie, is a species of flowering plant in the family Rosaceae native to the northeastern and central United States and southeastern Canada. It prefers full sun or partial shade and moist soil, but tolerates drier soil in a shadier location. It grows tall and firm, and produces blooms that are tiny and pink above its ferny, pointy leaves.

<i>Phlox pilosa</i> Species of flowering plant

Phlox pilosa, the downy phlox or prairie phlox, is an herbaceous plant in the family Polemoniaceae. It is native to eastern North America, where it is found in open areas such as prairies and woodlands.

<i>Dalea purpurea</i> Species of legume

Dalea purpurea is a species of flowering plant in the legume family known as purple prairie clover. Native to central North America, purple prairie clover is a relatively common member of the Great Plains and prairie ecosystems. It blooms in the summer with dense spikes of bright purple flowers that attract many species of insects.

References

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  2. Wessel, Mark (13 August 2021). "Ready to join the butterfly garden movement?". Toronto Sun . Retrieved 2022-10-05.
  3. Xerces Society (23 March 2016). Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects. Timber Press. ISBN   978-1-60469-598-4.
  4. Knepp, T (2011). Attracting pollinators to your garden (PDF). U.S. Fish & Wildlife Service.
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  15. Johnson, Anna L; Fetters, Andrea M; Ashman, Tia-Lynn (19 June 2017). "Considering the unintentional consequences of pollinator gardens for urban native plants: is the road to extinction paved with good intentions?". New Phytologist. 215 (4): 1298–1305. doi: 10.1111/nph.14656 . PMID   28626951.
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  17. Black, SH; Borders, B; Fallon, C; Lee-Mader, E; Sherpherd, M (2016). Gardening for butterflies: how you can attract and protect beautiful, beneficial insects. Portland, Oregon: Timber Press.
  18. "Official site". Million Pollinator Garden Challenge. Retrieved 8 January 2018.
  19. Hastings, A. (2015, June 12). Text - H.R.2738 - 114th Congress (2015-2016): Highways Bettering the Economy and Environment Pollinator Protection Act [webpage]. Retrieved December 6, 2017, from https://www.congress.gov/bill/114th-congress/house-bill/2738/text
  20. Conyers, J. (2017, July 11). Text - H.R.3040 - 115th Congress (2017-2018): Saving America’s Pollinators Act of 2017 [webpage]. Retrieved December 6, 2017, from https://www.congress.gov/bill/115th-congress/house-bill/3040/text