Hawthorn ( Crataegusspp . ) are small-scale deciduous flowering trees and bush in the rose family line , Rosaceae , that are develop as ornamentals . Sometimes referred to as " hawthorne , " they also produce fruit that is attractive to songbird and in some cases are used to make jellies .
Hawthorn trees are stout in USDA zone 3 to 8 .
Species of Hawthorn Trees
There are approximately 380 species of hawthorn , most of which have pricker and produce clusters of white flowers . The flush have five petals and resemble Malus pumila blossoms . They raise a yield known as haw that birds enjoy .
Some species of haw also proffer attractive fall gloss . Most of these trees develop best in full sun . allow ’s appear at a few examples of these humble Tree .
Native Hawthorn Species
- Scarlet Hawthorn :* * Also known as the Ontario haw , the carmine hawthorn ( Crataegus coccinea , zones 4 to 7 ) is aboriginal to eastern North America . This mintage has heights between 20 and 25 foot . The foliage has an orange or purplish red fall colour .
- Cockspur Hawthorn :* * The cockspur hawthorn ( Crataeguscrus - galli , zones 3 to 7 ) has low - hanging , horizontal leg and altitude between 25 and 35 feet . It offers cherry and orange fall colors .
- Green Hawthorn :* * The immature hawthorn ( Crataegus viridis , zones 4 to 8) , which is native to the southeastern U.S. , has heights between 20 and 35 base . This specie has fewer spines than other species of hawthorn and is believed to have neat resistance to certain disease .
Non-Native Hawthorn Species
- English Hawthorne :* * This species of hawthorn , often spelled " Nathaniel Hawthorne , " is the English haw ( Crataegus oxycantha , zones 4 to 7 ) , which is aboriginal to Europe and North Africa . It has heights between 15 and 20 feet and is often used as a hedgerow .
Unlike most hawthorn , the English hawthorne tree can grow in tone . It does not make significant dusk coloring . While the mintage has white prime , there are cultivar with pinkish and even ruby efflorescence useable .
Hawthorn Plant Problems
Hawthorn plant are prostrate toa variety of diseasesand pest infestation . Let ’s look at some common problems that affect coinage in this genus .
Diseases
Hawthorn trees , like many other species in the rose family , including other pome Tree like crabapple , are susceptible to a bacterial disease know as fireblight that enters the works through the blossoms . The bacterium is sometimes carry by pollinators .
Infected blooms and shoots wilt and die , make a charred coming into court that gives the disease its plebeian name . Cankers may seem on infected branches and sprig , which can be cut out to stop the disease from diffuse to the main proboscis , where it can be calamitous .
Hawthorn trees are also prone to other diseases , including fungal conditions like cedar - hawthorn and cedar - quince rusts , which causes orangish spots on leave , as well as such as powdery mould and leafage spots .
Pests
Hawthorn trees can become infested with pests , includingaphidsand scale , which are minor insects that survive by have plant sap from leaf . Caterpillar , folio miners and woodborer are also pests of hawthorn trees .
