August  14,  1902. 
JOURNAL  OF  HORTICULTURE  AND  COTTAGE  GARDENER. 
165 
GRAPES  NOT  STONING  (A.  S.  A.).— It  is  owing  to  imperfect 
fertilisation.  The  atmosphere  has  been  kept  too  dry  when  the 
Vine:  were  in  flower.  A  moist  atmosphere  should  have  been 
maintained  by  frequently  sprinkling  the  paths,  Ac.,  when  the 
Vines  were  in  flower.  We  do  not  advise  budding  a  Muscat  on 
the  Black  Hamburgh,  but  you  may  inarch  it  now,  or  early  next 
spring  graft  the  Black  Hamburgh  with  the  Muscat.  We  do  not 
think  that  will  enable  you  to  perfect  the  Muscats  in  a  greenhouse. 
Why  not  plant  Foster’s  White  Seedling  or  Buckland  Sweetwater? 
Either  is  better  than  the  Royal  Muscadine,  and  more  suitable  for 
a  greenhouse  than  the  Muscats. 
AMERICAN  BLIGHT  ON  APPLE  TREES  (A  Subscriber).— 
The  most  effectual  mode  of  freeing  the  trees  isrto  wash  them  with 
water  by  means  of  a  powerful  syringe  or  engine.  The  insects 
will  be  washed  on  to  the  ground,  and  though  incapable-  of  further 
injury,  it  is  well  to  remove  them  with  a  hoe,  hoeing  and  raking 
the  ground  as  far  as  the  branches  extend.  If  the  roots  are 
attacked  all  you  can  do  is  to  remove  the  old  soil  t-o-  the  extent  of 
6in  or  8in,  and  for  2ft  or  3ft  from  the  stem,  giving  the  roots  a 
good  washing,  and  replacing  with  fresh  spil.  The  soil  removed 
should  be  burned  or  taken  a  considerable  distance  from  the  trees. 
In  autumn,  after  the  leaves  fall,  the  trees  may  be  washed  with 
paraffin  oil,  applying  it  with  a  brush  to  the  parts  affected. 
MEALY  BUG  ON  GRAPES  (Caution). — As  the  insect  has 
attacked  the  bunches,  your  only  plan  will  be  to  tie  the  shoulders 
out,  so  as.  to  make  the.  bunches  as  loose  and  open  as  possible,  and 
then  you  may  with  a  small  brush  remove  the  insects.  It  is  not 
cnly  the  bug,  but  the  secretion' — honeydew — that  you  will  have 
to  clear  away,  and  that  may  be  partly  effected  with  water  at  a 
temperature  of  120deg,  applying  it  with  a  syringe.  To  rid  your¬ 
self  of  the  pest  without  destroying  the  bloom  and  injuring  the 
fruit  to  some  extent  is  cut  of  the  question.  When  the  leaves 
have  fallen,  you  may  then  give  everything  a  thorough  cleaning, 
and  had  this  been  done  before  the  Vines  were  started,  and  had  the 
plants  on  the  back  wall  been  kept  clear  of  the  bug,  the  present 
state  of  the  Grapes  might  have  been  considerably,  if  not  com¬ 
pletely  prevented. 
TOMATO  LEAF  DISEASED  (J.  D.)— Yes,  the  leaflets  are 
affected  cn  the  under  side  by  the  white  fly,  Aleyrodes  vapora- 
riorum,  in  all  stages,  from  eggs  to  adults.  It  is  the  larvae 
that  do  the  mischief  by  piercing  the  skin  and  sucking  the 
juices,  and  the  pupae  are  also  fixed  to  the  leaves,  and  the 
insects  emerge  after  a  few  days  spent  in  the  pupal  state.  The 
leaves  occupied  by  them  turn  yellow,  wither  and  die.  The 
insect  attacks  the  leaves  in  succession  from  the  lower  to  the 
upper.  It  is  rather  uncommon  for  outdoor  plants  to  be  infected 
as  well  as  indoor,  the  former  probably,  having  been  infected 
when  turned  cut  outdoors,  as  in  our  experience  these  insects 
are  unable  to  withstand  exposure  to  the  open  air  temperature 
cf  England.  Under  glass,  the  best  remedy  fcr  this  pest  is 
coating  the  hot-water  pipes  whilst  heated  to  over  170  degs 
with  a  cream  of  flowers  of  sulphur  and  skim  milk,  keeping  the 
house  closed  and  the  pipes  hot  for  an  hour,  then  allowing  them 
to  cool  down  to  ordinary  heat,  repeating  this  at  intervals  cf 
about  four  days  twice,  or  until  the  pest  is  annihilated.  Spray¬ 
ing  the  plants  on  the  under  side  of  the  leaves  with  tobacco 
water  is  also  a  good  remedy,  as  also  is  dusting  with  tobacco 
powder.  Vaporisation  with  nicotine  compound  destroys  the 
insects,  repeating  occasionally.  The  leaflets  are  so  affected 
with  the  Tomato  leaf  rust,  Cladosporium  pulvum,  which  is 
mostly  confined  to  plants  grown  under  glass  in  this  country, 
and  it  fellows  the  leaves  in  infection  from  below  upwards.  To 
contend  against  both  pests  we  advise  spraying  with  the  follow¬ 
ing  wash  :  Dissolve  1  pint  cf  softsoap  in  1  quart  cf  boiling  soft 
water.  Remove  from  the  fire,  and  while  still  boiling  hot,  add 
half  a  pint  cf  paraffin  oil,  and  immediately  churn  the  mixture 
with  a  small  hand  syringe.  In  five  minutes  a  perfect  emulsion 
will  be  obtained.  Then  dilute  to  5  gallons  with  hot  soft  water, 
adding  loz  cf  sulphide  of  potassium  (liver  of  sulphur)  previously 
dissolved  in  about  a  quart  cf  hot  water,  mixing  well.  When 
cool  enough,  spray  the  infected  plants,  under  as  well  as  upper 
surface  of  the  leaves,  coating  them  with  the  finest  possible  film 
cf  the  solution,  and  repeat  twice  or  three  times,  at  an  interval 
of  four  days,  so  as  to  destroy  the  white  fly  as  they  hatch  out. 
NAMES  OF  PLANTS. — Correspondents  whose  queries  are  un¬ 
answered  in  the  present  issue  are  respectfully  requested  to  consult  the 
following  number.  (W.  W.).— 1,  Clematis  viticella  purpurea;  2, 
Sophora  japoniea  pendula  ;  3,  Catalpa  syringaefolia ;  4,  Datura  Stramo¬ 
nium,  the  Thorn  Apple.  (G.C.). — Probably  a  Lobelia,  but  much  dried. 
(.J.  Honiton).— Gnaphalium  lanatum.  (M.  A.  R.). — 1,  Malva  Creeana  ; 
2,  Lythrum  alatum.  (Avoea).— A  poor  specimen  of  Alstrcemeria. 
Gardeners’  Provident  and  Charitable  Institutions. 
The  Gardeners’  Royal  Benevolent  Institution.— Secretary, 
Mr.  G.  J.  Ingram,  175,  Victoria  Street,  S.W. 
United  Horticultural  Benefit  and  Provident  Society. — 
Secretary ,  Mr.  W.  Collins,  9,  Martindale  Road,  Balham,  London,  S.W. 
Royal  Gardeners’  Orphan  Fund—  Secretary,  Mr.  Brian  Wynne 
8,  Danes  Inn  Strand,  London,  W.C. 
Trade  Catalogues  Received. 
Clibrans,  Manchester. — Bulbs. 
Fisher,  Son,  &  Sibray,  Ltd.,  Sheffield. — Catalogue  of  Bulb  and  Flower 
Roots. 
Little  &  Ballantyne,  Carlisle.— Bulb  Catalogue. 
T.  Methven  A  Sons,  Edinburgh. — Bulb  List. 
Sutton  &  Sons,  Reading. — Bulbs  for  li/02. 
James  Veiteli  &  Sons,  Ltd.,  Chelsea.— Catalogue  of  Bulbs  for  1002. 
James  Veitch  &  Sons. —  Catalogue  of ,  Hardy  Trees,  Shrubs,  Conifers, 
American  Plants ,  dc. 
Covent  Garden  Market.— August  13th, 
Average  Wholesale  Prices.— Fruit. 
£-sieve 
,,  culinary,  ^  sieve 
Bananas . 
Currants,  red,  ^-sieve 
, ,  bl  ack, 
Figs,  green,  doz.  ... 
Gooseberries,  ^-sieve  ... 
Grapes,  Hamburgh,  lb. 
,,  Muscat  ... 
Greengages,  ^-sieve 
s. 
d. 
s.  d 
s.  d. 
s.  0 
t 
Lemons,  Messina,  case  12  0to20  d 
6  0  to  8  0 
,,  Naples  ,,  25  0 
0  0 
3 
0 
4  0 
Melons,  each .  1  6 
2  0 
8 
0 
12  0 
Nectarines,  doz .  3  0 
12  0 
5 
0 
6  0 
Oranges,  case  . 12  0 
16  0 
9 
0 
10  0 
Peaches,  doz.  ...  ...  3  0 
12  0 
2 
0 
4  0 
Pines,  St.  Michael’s, 
4 
0 
5  0 
each .  2  6 
5  0 
0 
9 
1  6 
Plums,  Orleans,  £-sieve  4  0 
5  0 
2 
0 
3  0 
Raspberries,  peck  ...  3  0 
4  0 
8  0 
9  0 
„  lb.  pnts.,  doz.  3  0 
4  0 
Wholesale  Prices.— Vegetables. 
s: 
d. 
s.  d 
s.  d. 
s.  d 
2 
0  to  3  0 
Lettuce,  Cabbage,  doz.  0  6  to  0  0 
1 
6 
0  0 
,,  Cos,  doz.  ...  0  9 
1  0 
2 
0 
0  0 
Marrows,  doz .  1  0 
1  6 
0 
2 
0  0 
Mint,  doz.  bun.  .  4  0 
0  0 
3 
0 
4  0 
Mushrooms,  forced,  lb.  0  8 
0  9 
4 
0 
5  0 
Mustard  &  Cress,  pnnt.  0  2 
0  0 
0 
6 
0  0 
Parsley,  doz.  bnchs.  ...  3  0 
0  0 
5 
0 
0  0 
Peas,  blue,  bushel  ...  3  0 
4  0 
0 
2 
0  3 
Potatoes,  English, 
3 
0 
0  0 
new,  cwt .  6  0 
7  0 
1 
0 
1  3 
Radishes,  doz .  1  0 
0  0 
2 
6 
4  0 
Spinach,  bush .  2  0 
3  0 
1 
6 
0  0 
Tomatoes,  English,  lb.  0  4 
0  5 
0 
2 
0  0 
,,  Jersey .  0  3 
0  3T 
2 
6 
0  0 
Turnips,  bnch .  0  2 
0  3 
0 
1± 
0  2 
Artichokes,  green,  doz. 
,,  Jerusalem,  sieve 
Batavia,  doz . 
Beans,  French,  lb. 
,,  broad . 
,,  Searlct  Runners 
Beet,  red,  doz. 
Cabbages,  tally  ... 
Carrots,  new,  bun. 
Cauliflowers,  doz. 
Corn  Salad,  strike 
Cucumbers  doz.  ... 
Endive,  doz . 
Herbs,  bunch 
Horseradish,  bunch 
Leeks,  bunch 
Average  Wholesale  Prices.— Plants  In  Pots. 
Most  of  the  undermentioned  plants  are  sold  in  48  and  32-sized  pots 
s.  d.  s.  d 
Aralias,  doz .  5  0tol2  0 
Araucaria,  doz .  12  0  30  0 
Aspidistra,  doz .  18  0  36  0 
Crotons,  doz .  18  0  30  0 
Cvperus  alternifolius 
doz .  4  0  5  0 
Dracaena,  var.,  doz.  ...  12  0  30  0 
,,  viridis,  doz. .  9  0  18  0 
Ferns,  var.,  doz .  4  0  18  0  ! 
small,  100 .  10  0  16  0 
Ficus  elastiea,  doz.  ...  9  0  12  0  j 
Foliage  plants,  var,  each  10  5  0 
s.  d.  s.  d 
Fuchsias .  4  0  to  0  0 
Grevilleas,  48’s,  doz.  ...  5  0  0  0 
Hydrangea,  pink . 10  0  12  0 
Lycopodiums,  doz.  ...  3  0  0  0 
Marguerite  Daisy,  doz.  4  0  6  0 
Mignonette  ...  6  0  0  0 
Myrtles,  doz .  6  0  9  6 
Palms,  invar.,  doz.  ...  15  0  30  0 
,,  specimens  ...  21  0  63  0 
Pandanus  Veitchi,  48’s, 
doz .  24  0  30  0 
Shrubs,  in  pots  .  4  0  6  0 
Average  Wholesale  Prices.— Cut  I  lowers 
Arums,  doz . 
Asparagus,  Fern,  bnch. 
Bouvardia,  coloured, 
doz.  bunches  . 
Carnations,  12  blooms 
Cattleyas,  doz . 
Cornflower,  doz.  bun. 
Croton  foliage,  bun.  ... 
Cycas  leaves,  each 
Cypripediums,  doz.  ... 
Eucharis,  doz . 
Gardenias,  doz . 
Geranium,  scarlet,  doz. 
bnchs . 
Gladiolus,  white,  doz. 
bunches  . 
Gypsophila,  doz.  bun. 
Ivy  leaves,  doz.  bun. ... 
Lilium  Harrisi  . 
lancifolium  alb. 
,,  1,  rubrum . 
,,  longiflorum  ... 
s. 
d. 
s. 
d 
3 
0  to  0 
0 
1 
0 
2 
0 
6 
0 
8 
0 
0 
6 
1 
0 
12 
0 
15 
0 
1 
0 
1 
6 
0 
9 
1 
0 
0 
9 
1 
6 
2 
0 
3 
0 
2 
0 
3 
0 
2 
0 
2 
6 
4 
0 
0 
0 
3 
0 
0 
0 
3 
0 
0  0 
1 
6 
0 
0 
2 
0 
0 
0 
1 
0 
1 
6 
1 
0 
1 
6 
2 
0 
0 
0 
Lily  of  Valley,  12  bnchs 
s.  d.  s.  d 
12  0tol8  0 
Maidenhair  Fern,  doz. 
bnchs . 
4  0 
5  0 
Marguerites,  white, 
doz.  bnchs . 
4  0 
0  0 
,,  yellow,  doz.  bnchs. 
2  0 
0  0 
Myrtle,  English,  per 
bunch  . 
0  6 
0  0 
Odontoglossums . 
4  0 
0  0 
Orange  blossom,  bunch 
2  0 
0  0 
Roses,  Niphetos,  white, 
doz . 
1  0 
2  0 
,,  pink,  doz . 
2  0 
0  0 
,,  yellow, doz.  (Perles) 
1  0 
2  0 
,,  Generals . 
0  5 
0  6 
Smilax,  bunch  ...  ... 
2  6 
3  0 
Stephanotis,  doz.  pips 
2  0 
0  0 
Stock,  double,  white, 
doz.  bun . 
2  0 
3  0 
Sweet  Peas,  white  and 
coloured,  dozen  bun. 
1  0 
2  0 
Tuberoses,  dozen . 
0  3 
0  4 
