POLYGONUM see Persicaria and Fallopia

PRIMULA.  The bog primulas are not too fussy about soil and situation so long as it is moist and not heavily shaded. P.florindae in particular enjoys lime, but all will tolerate most soils. They all have a long flowering period.
-   alpicola.  Attractive primrose yellow , scented, bell flowers carried in a mop head. 1ft.    D
-   -   alba.  Delicate ivory coloured flowers. 1ft.        D
-   -   violacea.  Here the flowers are a soft lilac hue. 1 ft.       D
-   beesiana.  Magenta coloured candelabra primula. 2ft       C
-   bulleyana.  Glowing orange candelabra. 2ft.        C
-   florindae.  Drooping fragrant citron yellow mop- head flower. 2 ½ ft.     D
-   japonica.  Early pink flowered candelabra primula .  2ft.       C
-   - 'Millar's Crimson'.  As it's name suggests, a glowing dusky crimson. 2ft.     C
-   - 'Postford White'.  Strikingly lovely candelabra with pure white yellow eyed flowers. 2ft.   C
-   - 'Red Shades'.  Candelabra primulas with a colour range between light magenta and rosy purple. 2ft.  C
-   prolifera.  A lovely clear chrome yellow flowered candelabra. 3ft.      C
-   pulverulanta.  Brilliant vibrant magenta. Very eye catching. 2ft.      C
-   secundiflora.  A beautiful plant with a large mop-head of violet flowers. 2ft.   C
-    sikkimensis.  Like a small P. florindae. Fragrant nodding pale yellow flowers. 2ft.   C

RANUNCULUS. Why are these unfussy herbaceous plants seen so seldom?  The various varieties provide flower and fascinating foliage from Spring to Autumn, and some are a flower arranger's delight.
-   acris 'Pale Form' . A stunning plant.  Early leaves have a large chocolate coloured central zone, and the pale primrose yellow buttercup flowers last for many weeks. Clump forming. 2ft.   E
-   -  Flore-Pleno .  Another sixteenth century plant. Masses of small fully double deep yellow buttons on branching stems. Clump forming.  3ft.   E
-   - 'Stevenii'.  Statuesque and rare variety. Semi-double golden flowers from June. Spreads well. 4ft. E
-   constantinopolitanus 'Plenus' .  Dark holly green jagged leaves are set off by very double chrome yellow blooms with a marked green centre. Flowers over a long period.  1ft.   E
- repens 'Buttered Popcorn'.  An exciting new variety from the USA with glowing golden foliage. Rapid ground coverer; looks wonderful under bronze or purple coloured plants. 8 ins.   D
-    - 'Gloria Spale'. This interesting and highly decorative form has beautiful pale yellow flowers.   D
        -   - pleniflorus.  The double form of the creeping buttercup. A very old garden variety ideal for wilder plantings, pots on patios and damp places. 8 ins.   D

RANUNCULUS FICARIA (Lesser Celandine) Please see supplementary list

RHEUM. (Decorative Rhubarbs) Among the most handsome and architectural of damp lovers, with large leaves and huge rhubarb flower spikes they add an exotic effect to the pond-side. However, whilst they need moisture their crowns will rot if planted in too wet a soil.  For best results feed them well, in sun or half shade in an unexposed position.
-   'Ace of Hearts'.  (syn, Ace of Spades). Beautiful heart shaped leaves, dark green, and pink underneath , with red stems. Only growing to 3 ft at most it is the one for the smaller garden.  G
-   palmatum 'Atrosanguineum'.  Large deeply cut leaves, blood red when first emerging in the Spring, colouring to deep green with distinct rich carmine underneath and spreading over six foot. Red stalks, six foot tall, carry panicles of cerise crimson flowers followed by attractive seed heads.  I
-   -   tanguticum.  Leaves larger and more jagged covering an eight foot spread, deep green, tinted purple underneath. Flowers usually pinky white . 8ft.   I

RODGERSIA.  Noble plants for the waterside, forming non-invasive clumps, they will grow in sun if the soil is very moist, but do tend to suffer from wind and sun scorch , so are best in part shade. All have panicles of flowers in the pink to white colour range in Summer. However, in the main, due to accidental hybridisation over the years this genus contains rather compromised varieties.  We desperately need new wild collected material. In the meanwhile we offer those listed below in good faith, only R.podophylla and R.pinnata and the newest cultivars are true.
-   aesculifolia (hort).  As it's name implies this has leaves like a Horse-Chestnut.  Flowers white 4ft.   G
-   henrici (hort)   From north Burma, it is very similar to the above but has larger leaves and browner flowers. 4ft.    G 
-  'Parasol'. Like a much enlarged R. podophylla with foliage over 2 ½ ft across.     H
-   pinnata.  Here the leaves are arranged in pairs, white flower freely produced. 3ft.   G
-   -   'Superba'.  A slighly larger plant than the above , having pink flowers. 4ft.   G
-   -   'Kuppermond'.  A magnificent new cultivar whose leaves have a metalic copper tint until mid-June. Large flower spikes coloured dark copper pink in July. 4ft.   J
- podophylla.  Large leaves triangular in outline with jagged tips that are a rich bronze colour in Spring and often retain coppery tints. Flower white.  4ft.    G
- 'Irish Form'. Very similar to the above but this has much longer rhizomes and so spreads more quickly.   G
-   -   'Rotlaub'.  Growing a little lower than the species, it has red tinted stems and the leaves are of a grey orange tone overlaying dark green. White flower. 3ft.  J
-   -   'Smaragd' (hort).  A smaller variety with lighter green leaves. Flower greenish white. 3ft.   G
-   sambucifolia. (hort). Elder leafed Rodgersia. Flowers creamy white. 4ft.     G

In addition to these we have few of the following  R.'Maigrun', R.'Linden', both as yet not fully evaluated as they haven't been with us very long; as well as R. Hird 133, which is a R. pinnata with superb pale pink flowers and R. L1670 which is also a pinnata but has the deepest red flowers we have seen. It knocks the forms sold as R.pinnata 'Superba' into the proverbial cocked hat. Please enquire about availability before ordering.

SALVIA.
-   uliginosa.  When given sun and moist soil this is a spectacular plant. Many flower stems up to five foot tall carry a succession of purest sky blue flowers from late August to  October . Clump forming but will spread.  E

SANGUISORBA. Interesting vigorous spreading perennials needing rich soil and full sun. All have slim bottle brush flowers in late Summer.
-   canadensis.  Fresh green pinnate leaves. White bottle brushes held on tall stems Aug -  Sept. 5ft.   E
-   albiflora . Very glaucous leaf, white bottle brush flowers, creeping habit. 2ft.   E
-   magnifica alba. Serrated blue green foliage. Slightly drooping bottle brushes and coloured white tinged purple, non spreading. 4ft.    E

SCILLA.
-   liliohyacinthus.  These exquisite bulbs seem almost unknown but revel in a damp situation where they will increase happily,  forming large colonies in time.  Shiny green, slightly wavy leaves appear in very early Spring and are followed by clear blue Hyacinth-like flowers. By May the plant has disappeared and can therefore be used under deciduous shrubs. 10 ins.     E
 
SENECIO.
-   smithii.  A much sought after plant with it's dark green spear shaped leaves up to a foot long, and huge
clusters of white, yellow eyed, daisy flowers. A very beautiful bog-garden plant. 4ft.     H