PERENNIALS > PRIMROSE
IN THIS guidebook
PRIMROSE GUIDES
grow From SeedVarieties
The Primrose , that voiceless herald of spring , is strongly identify with the UK .
An abundance of relatively novel cultivar series means that primula are available in legion colour in tones pastel and concentrated , in double shape , and even in variegated pure tone .
P.‘Gold Laced’ Group (Polyanthus)
Overview
PreferredFull Sun or mottled Shade
ExposureSheltered
HeightUp to 10 cm
Spread0 – 0.1 K
Bloom TimeJanuary – May
PreferredMost Soil Types
P.‘Gold Laced’ Group (Polyanthus)
MoistureMoist but well drain
pHAny
Spring just would n’t be complete without primroses in an English country garden – correction , inanyEnglish garden .
P. belarina‘Valentine’
Indeed , primula are so powerfully identified with England that althoughP.vulgarisis native to – besides the British Isles – most of Europe it is predict ‘ English Primrose ’ all over the world .
Its subspeciesP. vulgarissubsp.vulgaris , also known as Common Primrose , run its aboriginal range to near Asia .
Habitat & Growing Conditions
Moisture , shadowiness , and cool temperature – these three factors combine to make the ideal home ground for Primroses .
Thus , these plants are very often found in and around damp timber tight to eubstance of water .
And if there is one genus for which the nearly standard caution against heavy Lucius Clay soils and wet soil can be dish out with it , it is the English Primrose , Common Primrose , andmost Primrose assortment , most particularly the Giant Cowslip .
The absolute majority of Primrose varieties prefers moist - to - dampish soils , the only difference of opinion between the varieties being one of degree .
Almost all miscellany are somewhat acidophilic with the difference between change , again , being one of degree .
The suitable pH for these plants ranges from 6.1 - 7.0 . rich humus- and compost - base soils are best for these plant .
Most Primrose species prefer shade or part spook , though there are exceptions .
Primrose varieties ’ Hardiness Zones vary quite widely but most , includingP. vulgarisand its race , have a USDA Hardiness Zone from 4 to 8 ( H4 - H7 RHS hardiness ) .
Planting Primrose
Autumn and natural spring are the best seasons to grow primrose by any method by which a picky diversity can be grown ( or plant or circularize ) .
Seeds are best sown in recent autumn , otherwise in former natural spring .
separate the industrial plant or separating offsets is another method of multiplication .
Depending on the variety this is best done in spring , autumn , or either and both .
For example , you should divideP. denticulatain fountain butP. vulgarisBelarina series cultiviars in autumn .
Where you constitute a Primrose plant depends fairly powerfully on the particular variety .
Popular ‘Danova’ Series Primroses are Easy to Grow
P. vulgarisand its race are great for mass plantings , are suitable for rock candy gardens , for grow on verges and slopes , and even as a delightful basis cover .
On the other deal , plants from the series that bear intensely - colour in and genuinely showy flowers , such as the ‘ Danova ’ series , are ideally suited as bedding presentation plant , for margin and edges , and as decorative container plants .
As for the extremely striking varieties like ‘ Perle von Bottrop ’ , ‘ Zebra Blue ’ , and ‘ Gold - Laced ’ Group , these can be grown and display as reliable specimen plant life in their own rights .
Plant Care
A very good grunge in which to grow the Brobdingnagian majority of Primroses would be a slimly acidic fertile clay - based loam with hommos and peat moss .
It should be kept moist and peculiarly so in hot or juiceless weather .
As opposed to the species , particularly ‘ Cowslip ’ , Primrose cultivars and series should be planted in soils with very upright drain .
Primroses are acknowledge as shade - loving plant and in the main this is true .
They will grow well in partial shade and dappled sun .
However , some assortment incline to one or another extreme .
For instance , ‘ Perle von Bottrop ’ favour part shadiness to full spectre whereas ‘ Giant Cowslip ’ prefers part sun to full sun .
Most mature plants will do very well in temperatures between 12.5 - 25 ° C .
“ Primulas are great naturalised ( particularly species ) or grown in pots , ” says Master Horticulturist Peter Lickorish .
“ In my experience , pots can be placed in full sun position because , in early spring , the intensity of the sunlight is unlikely to be a trouble .
“ If implant out afterwards , make certain to bear in mind that they will call for more tone in the summer months and plant accordingly . ”
Primroses do not need fertiliser in British condition peculiarly if the dirt is fertile , constitutive , and is amended with humus or organic manure .
That said , cultivar and serial varieties will profit from fertilising .
you’re able to feed once every fortnight from the start to the close of bloom season .
Do so by lightly sprinkling a general fertiliser at the foundation of the flora .
Common Problems
As Primula Primrose varieties are so legion and disparate , their resistance or susceptibleness to pests varies quite widely .
Though they are good for you plant in ecumenical , quite a number of pest may attack them .
These include slugs , aphids , vine weevil , eelworm , leafhopper and glasshouse red spider mite .
The diseases that can affect these plant are primula brown core , grey mould , and foliage blot .
