• The berries of most honeysuckle shrubs are adored by songbirds, which helps spread their seeds.Natures Bird Food - Honeysuckle Berries image by T^i^ from Fotolia.com
  
  Exotic honeysuckle bush varieties belong to the Lonicera genus. Widely imported from their native homelands of China, Japan and Europe for use as ornamentals and for erosion control, they have invasive habits that pose a significant risk to native plant life. Bush honeysuckle varieties shade out plant life and deplete the soil of nutrients, according to the National Park Service's website. Native North American honeysuckle varieties pose no danger of being invasive.
  
  

Tatarian Bush Honeysuckle

• The tatarian bush honeysuckle (Lonicera tatarica) grows 3 to 10 feet tall, and up to 12 feet wide. During the late spring, the shrub produces either pink or white flowers. Following flowering, bright red berries appear and persist on the bush from fall to winter. Songbirds adore eating the berries, and spread the seed through elimination. The seeds usually germinate beneath shrubs and trees where the birds roost.
  
  First introduced into North American in 1752, its native homeland is Russia and Asia, according to the Wisconsin Department of Natural Resource's website.
  
  The tatarian honeysuckle bush will flourish in a wide range of soil types. It can tolerate drought or withstand moist soil conditions. The shrub grows in U.S. Department of Agriculture zones 3 to 8.
  
  Control the tatarian honeysuckle by promptly digging up any seedlings that sprout. In some regions of the United States, personnel use controlled burns to eradicate tatarian honeysuckle. Cutting the plant back and applying glyphosate also kills the shrub.
  
  

Amur Bush Honeysuckle

• The amur honeysuckle (Lonicera maackii), native to Manchuria and Korea, grows to a height of 6 to 15 feet. In May and June, the shrub produces pink and white flowers that fade to yellow. The stems of the flowers have a soft fur covering. Following flowering, the shrub produces red berries.
  
  The bush grows rapidly, and out-shades native plants. The bush also may produce a toxic substance that makes the surrounding area uninhabitable by other plant life, according to the Wisconsin Department of Natural Resource's website.
  
  Control amur honeysuckle by hand digging the seedlings, prescribed burns and applying glyphosate directly to the shrub after cutting it to the ground.
  
  

Morrow's Bush Honeysuckle

• The Morrow's honeysuckle (Lonicera morrowii), native to Asia, grows 3 to 10 feet in height. From May to June, the plant produces white, tubular, fragrant flowers. Following flowering, the shrub sports berries in shades of orange, red and yellow. It commonly invades pond and stream banks. It also poses a threat to a forest edges, pastureland and along roadways.
  
  Control Morrow's honeysuckle by cutting the plant back to a height of 2 to 3 inches. Apply soluble triclopyr amine mixed with an equal amount of water directly to the bush from November to March, according to the Delaware Invasive Species Council's website.
  
  Apply glyphosate to the foliage of the morrow's bush honeysuckle from early summer to fall. Take care that the solution does not drip onto native plant life because it will kill other species.