CROCUS - RHSapps.rhs.org.uk/planttrials/TrialReports/Crocus (spring...RHS Trial of Crocus, spring flowering Introduction to Crocus, spring flowering Genus of dwarf, cormous perennials

CROCUS SPRING FLOWERING

Final Trials Report

2006 – 2009

Trials Office The Royal Horticultural Society Garden, Wisley, Woking, Surrey, GU23 6QB

Crocus Spring Flowering Final Report 2009 - Trial 1202 1

RHS Trial of Crocus, spring flowering

Introduction to Crocus, spring flowering Genus of dwarf, cormous perennials with small, goblet shaped flowers made up of 6 tepals. Plants are semi-erect with linear, lance shaped leaves which often have pale silvery central stripes. Crocus are widespread in Central and Southern Europe, North Africa, Middle East, Central Asia and Western China where they are found in a wide range of habitats including woodland, meadows and coastal regions. Objectives The objectives of the trial were:

• To assess a range of currently available spring-flowering Crocus species and cultivars

• To recommend the Award of Garden Merit to taxa considered excellent for ordinary garden use

• To determine correct nomenclature • To produce a permanent record through herbarium specimens,

photographs and written descriptions for the RHS Herbarium at Wisley • To demonstrate the performance of this plant group to Wisley Garden

visitors over a four year period, in a frame-yard and in the open ground Judging The Rock Garden Plant Trials Assessment Panel will assess entries in the trial for the Award of Garden Merit using the following criteria:

• Vigour • Resistance to disease • Impact • Flower • Foliage • Nomenclature

Entries There were 155 entries in the trial submitted by various individuals and nurseries throughout the UK and Europe and from The Royal Botanical Gardens, Kew.


Cultivation Corms were received in late summer/early autumn 2006 and were planted into 13cm lattice pots in the relevant soil type. Two different soil types were used, one for alkaline dry dormancy groups and one for acid/neutral moist/dry dormancy groups. Prior to planting, corms were dusted with a fungicidal powder to minimise disease and rot.

Soil Types Alkaline Dry Dormancy 2 parts John Innes No. 3 1 part leaf mould 1 part grit 8g/l Vitax Q4 1.7g/l Dolodust 0.28g/l Intercept

Acid/Neutral Moist/Dry Dormancy 1 part John Innes No. 3 2 parts leaf mould 1 part grit 8g/l Vitax Q4 0.28g/l Intercept

In 2006 the Crocus were planted in the Alpine Frame Yard where the beds could be covered to prevent damage in severe weather. The beds were covered with fine chicken wire and dressed over with gravel to prevent damage to the corms by mice. Both the chicken wire and the covering to the bed prevented bird damage during this period. In 2008, the entries were lifted from the Alpine Frame Yard in their lattice pots and plunged into a raised bed on the trials field. This bed was filled with a mixture of soil and grit and then dressed with a layer of gravel over the top. Pest and Disease The following pests and diseases were encountered during the trial:

• Root rot and lesions – caused by Phytophthora citricola; Phytophthora cinnamomi and Pythium violae

• Virus – Arabis Mosaic Virus and Iris Severe Mosaic Virus Other Findings C. biflorus subsp. Tauri flowered particularly well in 2009 due to the very cold winter. This was thought to be an excellent cultivar but is too dependent on cold winter temperatures to gain an AGM.


Public Vote The public visiting the trials field were invited to vote for their favourite Crocus. Voting slips were available between 23rd February and 3rd March 2009. 21 cultivars were voted for during this time and these were distributed as follows:

Public Vote for Crocus

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

3.0

3.0

3.0

3.0

4.5

4.5

4.5

6.0

7.5

9.0

10.4

13.4

16.4

0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0

C. 'Ard Schenk'

C. 'Goldilocks'

C. 'Vanguard'

C. malyi

C. 'Ego'

C. tommasinianus [JG2]

C. 'Lavender Striped'

C. × luteus 'Golden Yellow' AGM H4 1993

C. 'Dorothy'

C. × luteus 'Stellaris'

C. 'Ruby Giant'

C. tommasinianus x vernus 'Pieta'

C. 'Zenith'

C. olivieri subsp. balansae 'Zwanenburg'

C. biflorus subsp. tauri

C. vernus x tommasinianus pale -flowered [JG6]

C. biflorus subsp. tauri

C. tommasinianus un-named seedling

'C. 'Little Amber'

C. 'Margot'

C. 'Jeanne d'Arc'

% of Votes


Plants Receiving AGMs During Trial The following are the plants thought to fulfil the Award of Garden Merit criteria during the trial and to be worthy of receiving the award. The criteria which a plant needs to fulfil in order to receive the award are:

• excellent for ordinary garden use • available from nurseries • reasonably resistant to pests and diseases • of good constitution • essentially stable in form and colour • reasonably easy to grow

Hardiness ratings are as follows: H4 – hardy throughout the British Isles

Plants Awarded AGM

Crocus angustifolius ‘Bronze Beauty’ AGM (H4) 2010 [Trial No. 3] votes 10-0 Flowers January to March Pale yellow flowers with purple veining and feathering and orange styles. “Long flowering period and hold flowers well. Distinctive colour combination.” Sender: Mr J Rukšāns

Crocus etruscus ‘Zwanenburg’ AGM (H4) 2010 [Trial No. 136] votes 10-0 Flowers January to March Violet flowers becoming almost white at base with paler feathering and veining and orange styles. “Attractive soft violet flowers of even form. Good garden plant.” Sender: Jacques Amand International


Crocus ‘Goldilocks’ AGM (H4) 2010 [Trial No. 20] votes 14-0 Flowers January to March Golden yellow flowers with greyed-brown blotch in centre and red-orange styles. “Good constitution and increases well. Known to cope well on clay soils also.” Sender: Mr J Zweeris

Crocus x luteus ‘Stellaris’ AGM (H4) 2010 [Trial No. 62 & 71] votes 14-0 Flowers December to March Bright golden yellow flowers with bold purple-black stripes and yellow filaments. “Very attractively coloured flowers which appear before leaves have fully developed. Increases well.” Sender: Mr B Mathew & Mr J Zweeris

Reconfirmed AGMs

Crocus chrysanthus ‘Zwanenburg Bronze’ AGM (H4) 1993 [Trial No. 41] votes 10-0 Flowers December to March Dark reddish-brown flowers with yellow inner surface and edges and orange styles. “An excellent garden plant that has been around for decades. Early flowering. Suffered some frost damage in the very cold snap in early 2010.” Sender: Mr J Zweeris

Crocus corsicus AGM (H4) 1993 [Trial No. 170] votes 11-0 Flowers January to March White flowers with violet inner surface and purple stripes. “Very attractive and highly floriferous. Has proven its worth as a garden plant over many years.” Sender: RBG Kew


Crocus flavus subsp. flavus AGM (H4) 1993 [Trial No. 39, 42, 43, 44 & 45] votes 12-0 Flowers December to March Golden yellow flowers with paler yellow filaments. “Highly floriferous with attractive flowers. Establishes well in light soil and seeds widely although this leads to tonal variation in colour.” Sender: Mr J Zweeris

Crocus malyi AGM (H4) 1993 [Trial No. 67 & 75] votes 13-0 Flowers January to March White flowers with greyish-purple and yellow base and orange styles. “Very attractive flower which grows well in the garden. Best on alkaline soil.” Sender: RBG Kew & Mr J Rukšāns

Crocus sieberi ‘Bowles White’ syn of ‘Albus’ AGM (H4) 1993 [Trial No. 128, 144 & 145] votes 14-0 Flowers January to March White flowers with egg yolk yellow base to the petals and orange filaments. “Excellent garden plant. Produces large numbers of attractive flowers with rich, golden-yellow throats.” Sender: Broadleigh Gardens, Jacques Amand International & RHS Plant Centre

Crocus ‘Snow Bunting’ AGM (H4) 1993 [Trial No. 29 & 34] votes 14-0 Flowers December to February White flushed buff flowers with dark purple longitudinal streaks and bright orange styles. “Floriferous and attractive. A good garden plant which has proven its worth over many years.” Sender: Avon Bulbs & Mr J Zweeris


Crocus tommasinianus AGM (H4) 1993 [Trial No. 86-9, 93-101, 103-5, 110 & 139-40] votes 11-0 Flowers December to March Violet to purple flowers with silvery grey to white base and orange-yellow filaments and styles. “Attractive, vigorous garden plant guaranteed to give a good display. Seed and hybridise freely giving a wide range if shades.” Sender: Avon Bulbs, Broadleigh Gardens, Dr J Grimshaw, Jacques Amand International, Mr B Mathew, Mr J Rukšāns, RBG Kew & RHS Plant Centre

Crocus x luteus ‘Golden Yellow’ AGM (H4) 1993 [Trial No. 138] votes 14-0 Flowers December to March Golden yellow flowers with central brown feathered stripes and golden yellow filaments. “Cheerful, bright coloured flowers. Robust garden plant.” Sender: Jacques Amand International

Awarded AGM Subject to Availability

The following entries have been recommended for the AGM but cannot receive the award until they are available to the public in retail catalogues. It is the responsibility of the sender to inform the Trials Office at Wisley that all queries have been resolved. Crocus ‘Margot’ AGM (H4) 2010 [Trial No. 119] votes 13-0 Flowers January to March White flowers with central pale yellow flush from base to tip and pale orange-yellow filaments. Inner tepals are violet with fine white margins. “Good vigorous garden plant with attractive contrast between outer and inner tepals. Very distinct.” Sender: Rev. Blakeway-Phillips Jacques Amand prepared to take up and make available


Crocus ‘Midas Touch’ AGM (H4) 2010 [Trial No. 21] votes 9-3 Flowers January to March Orangey-cream flowers, golden yellow at the base, with orange-yellow filaments. “Increases well and has a distinctive soft yellow colour. Held widely by collectors but not yet available in the trade.” Sender: Mr A Edwards Jacques Amand prepared to take up and make available

The following previously awarded Awards of Garden Merit were not reconfirmed and will be considered during the Sunset Review 2012.

Crocus ‘Ladykiller’ AGM (H4) 1993 [Trial No. 23] Sender: Avon Bulbs

Open Day A Crocus open day was held at RHS Wisley Garden on 26th February 2008 and was attended by approximately 100 people. The open day was chaired by Captain Peter Erskine and included talks by John Grimshaw, Roger Holland and Janis Rukšāns along with living exhibits from the National Collection at Wisley and Herbarium specimens. Herbarium Exhibits

Crocus sieberi ‘Albus’ Exhibited by E A Bowles on 26 January 1937 and granted Award of Merit. Painting by Edward Augustus

Crocus vernus (purple spring crocus) From a field at Hulme nr Manchester April 1879


The Talks Dr John Grimshaw – Head Gardener of Colesbourne Garden. Dr Grimshaw outlined the Crocus which he would recommend for growing in the garden: Spring Flowering: C. vernus; C. tomassinianus; C. chrysanthus; C. flavus Autumn Flowring: C. pulchellus; C. speciosus; C. kotschyanus; C. medius He also recommended types of crocus suitable for growing in pots due to the different conditions from which they originate:

1. Damp growing: Found in high alpine regions, wet and cold, short growing season – very difficult to grow. Compost has to be damp at all times, especially when dormant e.g. C. vitellinus. Don’t grow well in S England but do well in Scotland e.g. C. x elistericos and C. scardicus.

2. Normal: C. cyprius is just too small to be grown in a garden.

3. Dry growing: Grow in semi-desert, short growing season, mainly from Israel,

Jordan, Syria, extremities of Turkey – very difficult to grow. Crocus moabiticus from Moab, Jordan, almost extinct in the wild. Has wonderful feathering on all the tepals with a grey-white background. Few crocus are in fact frost tender but some from the Levant are, e.g. C vitellinus.

Roger Holland - http://www.eabowlessociety.org.uk/ A tribute was made to E A Bowles, member of the RHS from 1897 until his death in 1954. In 1900 he was elected to the Scientific Committee and in 1908 served on RHS Council. In 1924 he published A handbook of Colchicums and Crocus which was the standard work until Brian Mathew’s The Crocus of 1982. The Myddleton House Society was founded in memory of E A Bowles’ good works and value to the surrounding community. A crocus was named in his honour: ‘Bowles White’ = C. sieberi var albus. Bowles was a crocus enthusiast. He particularly liked crocus with rounded, gourd-shaped flowers and mid-blue feathering on the segments. He raised 16 Crocus chrysanthus cultivars, with a heavy, honey perfume, but now only four cultivars are still available:

• ‘Snow Bunting’ – good and cheap to buy; best known and most vigorous; exterior with a slightly cream tinge and feathering.

• ‘Kittiwake’ – smaller than ‘Snow Bunting’’ cultivate in a frame. • ‘Blue Jay’ – one known collection in Denmark. • ‘Myddelton Cream’ - Ray Cobb March 1954 noticed this a few months before

EAB died, he gave a few corms to Alan Edwards c. 1998. Flowered in 2001and given name ‘Myddelton Cream’; awarded Certificate of Preliminary Commendation from Rock Garden Plant Committee, February 2001.


http://www.eabowlessociety.org.uk/

The Panel: (L to R) Peter Erskine; David Stephens; John Grimshaw; Janis Rukšāns

Janis Rukšāns The well known plantsman, bulb expert and nurseryman from Latvia, who had flown in especially for the day, gave an illustrated talk on the crocus he had seen and photographed in some very inhospitable regions of the world. Turkish trip in 2007 Jatu: C ancyrensis – unbranched stigma, yellow flower

C olivieri – branched stigma, yellow flower Lake Abant: C abantensis range of colours from white to blue/mauve

C biflorus subsp pulchricolor (? Indistinguishable from biflorus tauri) C fleischeri – form with purple stripes on back of tepals

S W Anatolia: C biflorus subsp atrospermus

C antalyensis – long neck underground (up to 20cm) C biflorus subsp. isauricus – grey/black connective and intensely orange throat


Trial Index and Senders Details

Crocus, spring flowering 2006 – 2010

No. Name Sender

1 C. 'Aubade' Mr J Zweeris

2 C. angustifolius, from Oreanda, Crimea Mr J Rukšāns

3 C. angustifolius 'Bronze Beauty' Mr J Rukšāns

4 C. ancyrensis 'Golden Bunch' RHS Plant Centre

5 C. ancyrensis RBG Kew

7 C. biflorus subsp. Nubigena Mrs E Pasche

8 C. biflorus subsp. Tauri Mr J Rukšāns

9 C. 'Advance' 'Dorothy' RHS Plant Centre

10 C. biflorus subsp. crewei Mrs E Pasche

11 C. chrysanthus 'Charmer' Mr J Rukšāns

12 C. chrysanthus 'Blue Dream' Mr J Rukšāns

13 C. biflorus subsp. weldenii 'Fairy'

Mixed 'Ladykiller' & 'Zwanenburg Bronze' RHS Plant Centre

14 C. 'Blue Bird' Broadleigh Gardens

15 C. chrysanthus 'Ard Schenk' W H de Goede

16 C. 'Dorothy' Mr J Zweeris

18 C. 'E.P. Bowles' Mixed 'Dorothy' & 'Goldilocks' Avon Bulbs

19 C. 'Elegance' Mr J Zweeris

20 C. 'Goldilocks' Mr J Zweeris

21 C. 'Midas Touch' Mr A Edwards

22 C. 'Jeannine' Mr J Zweeris

23 C. 'Ladykiller' AGM (H4) 1993 Avon Bulbs

25 C. chrysanthus 'Goldmine' Mr J Rukšāns

28 C. chrysanthus biflorus 'Serevan' Mr J Zweeris

29 C. 'Snow Bunting' AGM (H4) 1993 Avon Bulbs

30 C. chrysanthus 'Snow Crystal' Mr J Rukšāns

32 C. 'Zenith' Mr J Zweeris

33 C. 'Vanguard' AGM (H4) 2005 Broadleigh Gardens

34 C. 'White Triumphator' 'Snow Bunting' Mr J Zweeris

35 C. chrysanthus 'Uschak Orange' Mr J Rukšāns

36 C. dalmaticus Mr J Rukšāns

37 C. dalmaticus 'Petrovac' Mr J Zweeris


39 C. flavus subsp. flavus 'Aureus' Mr J Zweeris

40 C. 'Spring Pearl' Mr J Zweeris

41 C. chrysanthus 'Zwanenburg Bronze' AGM (H4) 1993 Mr J Zweeris

42 C. flavus subsp. flavus 'Lactaeus' Mr J Zweeris

43 C. flavus subsp. flavus sulphorus concolor Mr J Zweeris

44 C. flavus subsp. flavus *JZ1 'Lactaeus' Mr J Zweeris

45 C. flavus subsp. flavus 'Lutescens' Mr J Zweeris

46 C. imperati RBG Kew

47 C. imperati subsp. suaveolens Mr J Zweeris

48 C. imperati subsp. suaveolens Mr A Edwards

50 C. flavus flavus disectus graveolens Mr J Zweeris

51 C. fleischeri Mr J Rukšāns

52 C. korolkowii 'Kiss of Spring' Mr J Rukšāns

53 C. korolkowii 'January Gold' W H de Goede

54 C. korolkowii 'Golden Nugget' Mr J Zweeris

55 C. korolkowii 'Dark Throat' Mr J Rukšāns

56 C. korolkowii 'Mountains Glory' Mr J Rukšāns

57 C. korolkowii 'Varzob' Mr J Rukšāns

58 C. korolkowii 'Yellow Tiger' Mr J Rukšāns

59 C. korolkowii kosaninii 'April View' W H de Goede

60 C. korolkowii RBG Kew

61 C. korolkowii 'Lucky Number' Mr J Rukšāns

62 C. × luteus 'Stellaris' Mr J Zweeris

63 C. × jessoppiae Mr J Rukšāns

64 C. leichtlinii DS 98-26 Mr A Edwards

65 C. laevigatus B Mathew

66 C. olivieri subsp. balansae 'Zwanenburg' Mr J Zweeris

67 C. malyi RBG Kew

68 C. malyi 'Ballerina' RHS Plant Centre

69 C. malyi 'Sveti Roc' Mr J Rukšāns

70 C. laevigatus Mr J Zweeris

71 C. × luteus 'Stellaris' B Mathew

72 C. reticulatus subsp. reticulatus Mrs E Pasche

73 C. reticulatus subsp. reticulatus Mr J Rukšāns

74 C. olivieri subsp. olivieri Mr J Rukšāns


75 C. malyi Mr J Rukšāns

76 C. reticulatus × angustifolius 'Ego' Mr J Rukšāns

77 C. reticulatus × angustifolius 'Janis Rukšāns' Mr J Rukšāns

78 C. reticulatus × angustifolius 'Little Amber' Mr J Rukšāns

79 C. reticulatus × angustifolius 'Nida' Mr J Rukšāns

80 C. olivieri subsp. balansae Mixed Mr J Rukšāns

81 C. sieberi subsp. sieberi 'Cretan Snow' Mr J Rukšāns

82 C. reticulatus × angustifolius 'Alionka' Mr J Rukšāns

83 C. sieberi 'George' Mr J Rukšāns

84 C. sieberi subsp. atticus 'Firefly' Broadleigh Gardens

86 C. tommasinianus RBG Kew

87 C. tommasinianus Broadleigh Gardens

88 C. tommasinianus 'Barr's Purple' RHS Plant Centre

89 C. tommasinianus f. albus 'Albus' RHS Plant Centre

90 C. sieberi RBG Kew

91 C. sieberi subsp. sublimis 'Michael Hoogs Memory' Mr J Rukšāns

93 C. tommasinianus 'Lilac Beauty' Mr J Zweeris

94 C. tommasinianus *JG1 Dr J Grimshaw

95 C. tommasinianus *JG 2 Dr J Grimshaw


97 C. tommasinianus 'Ruby Giant' Broadleigh Gardens

98 C. tommasinianus *JG 4 Dr J Grimshaw


100 C. tommasinianus 'Lavender Striped' Mr J Rukšāns

101 C. tommasinianus 'Pink Pictus' B Mathew

102 C. 'Jeanne d'Arc' W H de Goede

103 C. tommasinianus var. roseus 'Roseus' Avon Bulbs

104 C. tommasinianus 'Whitewell Purple' Broadleigh Gardens

105 C. tommasinianus 'Whitewell Purple' RBG Kew

107 C. vernus subsp. vernus RBG Kew

108 C. vernus subsp. vernus Mrs E Pasche

109 C. vernus subsp. vernus No.43 RBG Kew

110 C. tommasinianus *BM1 B Mathew

111 C. vernus B Mathew

113 C. heuffelianus × 'Carpathian Wonder' Mr J Rukšāns


114 C. heuffelianus × 'Brian Duncan' Mr J Rukšāns

115 C. heuffelianus from Carpathes Orientales Mr J Rukšāns

116 C. heuffelianus × 'Wildlife' Mr J Rukšāns

117 C. vernus subsp. vernus 'Croatia' Mr J Rukšāns

118 C. vernus subsp. vernus 'Oradea' Mr J Rukšāns

119 C. 'Margot' Rev. Blakeway-Phillips

120 C. vernus subsp. vernus var. scepusiensis Mr J Rukšāns

121 C. versicolor 'Picturatus' Mr J Zweeris

122 C. versicolor Mr J Rukšāns

123 C. vernus × tommasinianus 'Pieta' Dr J Grimshaw

124 C. tommasinianus × vernus, pale *JG6 Dr J Grimshaw

126 C. versicolor 'Picturatus' RBG Kew

127 C. 'Prins Claus' Broadleigh Gardens

129 C. pestalozzae Dix Export

130 C. biflorus subsp. tauri Dix Export

131 C. 'Gipsy Girl' Floral Fireworks

132 C. 'E.P. Bowles' Mixed 'Dorothy' & 'Goldilocks' Floral Fireworks

133 C. 'Blue Pearl' AGM (H4) 1993 Floral Fireworks

134 C. vitellinus Dix Export

136 C. etruscus 'Zwanenburg' Jacques Amand International

137 C. korolkowii Jacques Amand International

138 C. × luteus 'Golden Yellow' AGM (H4) 1993 Jacques Amand International

139 C. tommasinianus 'Whitewell Purple' Jacques Amand International

140 C. tommasinianus 'Barr's Purple' Jacques Amand International

141 C. flavus Capt P Erskine

142 C. tommasinianus × vernus, white flowered sport of 123 Dr J Grimshaw

143 C. olivieri subsp. olivieri, broad-leaved sport of 74 Mr J Rukšāns

144 C. sieberi 'Bowles' White' syn of 'Albus' RHS Plant Centre

145 C. sieberi 'Bowles' White' syn of 'Albus' Jacques Amand International

157 C. kosaninii Mr J Rukšāns

158 C. veluchensis 'White Night' Mr J Rukšāns

159 C. veluchensis 'Nights of Rhodop' Mr J Rukšāns

170 C. corsicus AGM (H4) 1993 RBG Kew

171 C. minimus RBG Kew

172 C. minimus var. 'Bavella' Mr A Edwards

N.B Names that are struck through have been checked by RHS Botanists


Sender Details Avon Bulbs, Burnt House Farm, Mid Lambrook, South Petherton, Somerset TA13 5HE

B Matthew, c/o Trial Office, RHS Garden Wisley, Woking, Surrey GU23 6QB

Broadleigh Gardens, Barr House, Bishops Hull, Taunton, Somerset TA4 1AE

Capt P Erskine, c/o Trials Office, RHS Garden Wisley, Woking, Surrey GU23 6QB

Dix Export B.V., Leidsevaartweg 46, 2106 NA Heemstede, The Netherlands

Dr J Grimshaw, c/o Trials Office, RHS Garden Wisley, Woking, Surrey, GU23 6QB

Dr J Rukšāns, Bulb Nursery, Vecpulkas, PO Stalbe, LV-4151 Cesis, Latvia

E Pasche, Germany, c/o Trials Office, RHS Garden Wisley, Woking, Surrey GU23 6QB

Floral Fireworks, Burnt House Farm, Mid Lambrook, South Petherton, Somerset TA13 5HE

J Zweeris, 1 Renestraat 34, 1756 AK Zand, The Netherlands

Jacques Amand International, The Nurseries, Clamp Hill, Stanmore, Middlesex HA7 3JS

Mr A Edwards, c/o Trials Office, RHS Garden Wisley, Woking, Surrey GU23 6QB

Mrs E Parker-Jervis, Mill Barn, Longworth, Abingdon, Oxon OX13 5EJ

Rev. Blakeway-Phillips, 61 Long Row, Latchford Lane, Great Haseley, Oxon OX44 7LE

RHS Plant Centre, RHS Garden Wisley, Woking, Surrey, GU23 6QB

Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB

W H de Goede, Middenweg 10B, 1764 KM Breezand, The Netherlands



Source: Horticultural Trials and Relations, RHS Garden Wisley, Woking, Surrey GU23

6QB E-mail: [email protected]

More information about RHS Trials and other colour illustrated reports can be found on

the RHS Website: http://www.rhs.org.uk/trials

mailto:[email protected]

http://www.rhs.org.uk/trials

Documents

CROCUS - RHSapps.rhs.org.uk/planttrials/TrialReports/Crocus (spring...RHS Trial of Crocus, spring flowering Introduction to Crocus, spring flowering Genus of dwarf, cormous perennials