A (2) | B (8) | C (4) | D (3) | F (6) | G (1) | H (5) | L (2) | M (4) | O (3) | P (6) | Q (1) | R (7) | S (8) | T (2) | W (1) | Z (1) | ALL (64)

Reverse

Underside of the petal.

Rootstock

Host plant to which selected rose varieties are grafted. Most commercial growers propagate new plants by grafting cuttings to a rootstock. The advantage of rootstock is that many roses, especially modern cultivars, have weak root systems. The primary rootstocks used are Rosa multiflora for acid soils, 'Dr. Huey' for alkaline soils, and 'Fortuniana' for sandy soils. The issue of whether "own root" roses or grafted roses are better is one of the enduring debates of rosarians, and each technique has its advantages.
R indica major was a commonly-used rootstock in Australia in the past, and survivors are often seen in old gardens.

Rugose

Leaf veins which are deeply etched into the leaf. Rugosa roses are so-named for this specific characteristic.

Rustling

An American term, not often used within Australia. Rose Rustling,The practice of searching for Old Roses in the hopes of taking cuttings. Favorite haunts of rose rustlers include abandoned properties, cemeteries, and roadsides. Always ask permission before taking cuttings. Never remove the whole plant unless destruction is imminent.
Many cemeteries have their own propagating teams to preserve their old roses. Please note that ALL plant material at Rookwood necropolis is protected by law, and may not be removed.

Scion

The leaf stock or shoot which is grafted to rootstock.

Semi-double

A rose with 12 to 24 petals.

Single

A rose with 4 to 8 petals.

Species Rose

Roses which are self-fertile, and if self-pollinated will come true. Another term used is "wild"; species roses are those which have evolved naturally to adapt to their native habitat. Most flower only in spring, and will sucker if grown on their own roots.
There are no roses native to the Southern Hemisphere. Some species of roses have become declared weeds in Australia (and New Zealand); the dog rose R canina and the sweetbriar. Roses are considered as pest plants in terms of rubbish removal, and may not be included in "green waste" or plant trimmings intended for compost for general sale.

Sport

Genetic mutation in a plant. Sports in roses are not unusual, and many new introduced varieties are sports as opposed to hybrids. Sports may be evidenced in different flower colors, flower form, and growth habit. For example, Souvenir St. Anne's is a semi-double sport of Souvenir Malmaison, and Climbing Souvenir Malmaison is a sport of this relatively small Bourbon.

Stamen

Male organ of flower. Pollen comes from the anther.

Substance

The amount of moisture in the rose's petals. While it is difficult to ascertain how much moisture is in a particular rose's petals by touch, thickness and firmness are keys to determining substance. A rose with substance will last well after being cut, thus, it is important that exhibition roses (or roses you would like the family to enjoy in the house) have good substance.

Sucker

There are 2 types:
- Stem or shoot growing from the rootstock instead of the grafted variety. Suckers should be removed at their base, by pulling downwards.
- A new plant growing from a root, from a plant which is growing on its own roots (ie not budded onto a rootstock). Some roses can become invasive this way. In general, most roses which flower in spring only (except most ramblers), especially species roses including R bracteata, and gallicas, will do this. Rugosas will also sucker if grown on their own roots, and can become invasive. These plants are best bought budded. or grown in a large tub.

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