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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.
Crocus Spring Flowering Final Report 2009 - Trial 1202 2
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.
Crocus Spring Flowering Final Report 2009 - Trial 1202 3
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 4
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 Spring Flowering Final Report 2009 - Trial 1202 5
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 Spring Flowering Final Report 2009 - Trial 1202 6
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 Spring Flowering Final Report 2009 - Trial 1202 7
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 Spring Flowering Final Report 2009 - Trial 1202 8
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 9
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.
Crocus Spring Flowering Final Report 2009 - Trial 1202 10
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 11
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 12
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 13
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
96 C. tommasinianus *JG3 Dr J Grimshaw
97 C. tommasinianus 'Ruby Giant' Broadleigh Gardens
98 C. tommasinianus *JG 4 Dr J Grimshaw
99 C. tommasinianus *JG5 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
Crocus Spring Flowering Final Report 2009 - Trial 1202 14
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 15
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
Crocus Spring Flowering Final Report 2009 - Trial 1202 16
Crocus Spring Flowering Final Report 2009 - Trial 1202 17
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