This taxon, treated as a hybrid between Rubus occidentalis and Rubus idaeus strigosus in some works, is seen as no more than a synonym of Rubus idaeus strigosus in the USDA Plants Database (https://plants.usda.gov/core/profile?symbol=RUIDS2).
The genus Rubus, (especially the blackberries, which are often loosely referred to as Rubus fruticosus agg.) presents some of the most difficult taxonomic problems. This is partly due to the frequency of polyploidy; also to the frequent occurrence of hybridization; and also due to apomixis, where minor differences between plants are preserved because seedlings are genetically identical to their parent. As a result, differences of opinion on the number of species to be recognized from a given region can vary tremendously (for example, a treatment by M. L. Fernald[] in 1950 recognized 205 species for the northern half of the eastern United States plus parts of southeastern Canada, whilst H. A. Gleason and A. Cronquist in 1991 recognized only 25)[]. Where possible, a relatively conservative approach is taken here[].

Common Name:

General Information

Rubus x neglectus is an erect, deciduous shrub producing each year a cluster of biennial stems up to 200cm tall. The stems only produce leaves, and do not flower, in their first year of growth; producing flowering branches in their second year and then dying after fruiting[].
The plant is harvested for its edible fruit.

Known Hazards

None known

Botanical References

,

Range

Eastern N. America - Vermont to Ontario, Pennsylvania and Ohio.

Habitat

A naturally occurring hybrid, Rubus occidentalis x Rubus idaeus strigosus. It grows wild in dry or rocky soils[].

Properties

Edibility Rating
Habit	Deciduous Shrub
Height	2.00 m
Pollinators	Insects
Cultivation Status	Wild

Cultivation Details

Easily grown in a good well-drained loamy soil in sun or semi-shade[, , ].
A group of natural and artificial hybrids, Rubus occidentalis x Rubus idaeus strigosus, they are often cultivated for their edible fruit[, ]. There are many named varieties[].
Plants in this genus are notably susceptible to honey fungus[].

Edible Uses

Fruit - raw or cooked and used in pies, preserves etc[, ].

Medicinal

None known

Other Uses

None known

Propagation

Seed - requires stratification and is best sown in early autumn in a cold frame. Stored seed requires one month stratification at about 3°c and is best sown as early as possible in the year. Prick out the seedlings when they are large enough to handle and grow on in a cold frame. Plant them out into their permanent positions in late spring of the following year. This is a hybrid species and will not breed true from seed.
Cuttings of half-ripe wood, mid summer in a frame[].
Tip layering in July. Plant out in autumn.
Division in early spring or just before leaf-fall in the autumn[].