I5i 
THE GARDENING WORLD 
September 17, 1904. 
Propagating Ailanthus. 
Is there any way of increasing Ailanthus glandulo-sa P I have 
never seen seeds upon it, though a tree here 1 is 18ft. to 20ft. high. 
(D. W, R.) 1 . ., ,. 
Large trees do sometimes produce good seeds m considerable 
quantity, especially in certain seasons, but warm years are more 
favourable to the production and development of seeds than 
cloudy and wet- ones. It would also depend upon the condition 
of the weather at the time the trees are in -bloom, hut we 
certainly have seen fertile seeds produced in large quantity. 
Possibly some of the leading seedsmen might have seeds obtained 
from abroad. You can, however, help yourself to some extent 
by encouraging the development' of suckers from the roots of 
your tree and lifting these when roots are well developed. The 
best' means of propagating it, however, is by digging up some of 
the roots of the tree and cutting the stronger pieces into lengths 
of a few inches. Insert' them in boxes of sandy soil, with the 
stronger ends on a level with the surface, and place the boxes on 
the hot bed of a propagating pit in spring. This will cause the 
pieces of root to develop 1 shoots in the samei r ay as the tree 
produces suckers in the open ground when its roots have been 
accidentally cut by digging. After they have well started into 
growth, they can be gradually hardened and placed in frames 
for a time until the weather becomes suitable for planting them 
in nursery lines in the open air. 
Destroying Wasps’ Nests. 
We employed some liquid tar to destroy a wasp’s nest, pouring 
it into the hole and then setting fire to it, but it was not very 
successful. Could you mention a better way ? Please- say also if 
there is any sure and safe way of destroying a hanging nest of 
wasps. (A. J. A.) 
There is a very effective way of destroying nests in the ground 
by means of cyanide of potassium, but that is a very virulent 
poison and should b© used very carefully, so as not to have any 
of it lying about, after the- operation. The plan is to dissolve 
4 ozs. of cyanide of potassium in 4 pint of water, then get a 
small piece of linen or woollen rag, dip this into- the solution, and 
lay the piece across the opening of the wasp’s nest. The poison 
arising from this will very quickly act upon those wasps- which 
are attempting to- come into the nest, and also-upon those coining 
out of the nest, so- that the whole colony will he very quickly 
destroyed by this means:. A second dip might be necessary if 
the colony is a large one, but after the destruction of it- has been 
effected the rag employed should be burned. There is a method 
of destroying hanging wasps’ nests- by means of sulphur which has 
been heated until it b-oils, when pieces of cotton rag are dipped 
into it so as to be- thoroughly smeared. One or two of these 
pieces of rag will be sufficient to destroy the whole colony, and 
the method of doing it is to fix the rag on the end of a long stick, 
so that the operator can stand at a safe distance. Then set fire 
to the rag which has been dipped in the sulphur and hold it under 
the opening of the hanging nest, which will quickly stupefy all 
the wasps in it, after which the nest may be cut down and 
destroyed. 
Tomato Diseased. 
I am sending you a specimen of a diseased Tomato. I should 
be much obliged if you would inform ana through the medium of 
your valuable paper what it is- called, and also if there is any 
remedy for it. I have a house full of Tomato®, and some of them 
are affected with this disease ; some plants have several bad ones 
on them, and others have not any. It seems to be spreading. 
(Subscriber.) 
The specimen you sent us was- -attacked with the- black spot of 
Tomatos (Cladosporium Lycopersici). This -disease does- not, as 
a rale, spread very fast unless the circumstances are peculiarly 
favourable to its development. A moist atmosphere favours it 
by enabling the fungus- to enter by the decaying remains: of the 
style. You should remove all 1 the diseased fruits at once and 
burn them to- prevent the spore® of had fruits from affecting 
healthy ones. It is not sufficient to pick off the fruits and 
throw them down, thinking that sufficient to end the trouble ; 
but you should burn them. At the same- time you should keep- 
the atmosphere of the house dry to prevent the spores from ger¬ 
minating on the decaying flowers- of healthy young fruits. The 
Black Spot of Tomatos- sometimes grows on fruits out of doors 
if the weather is warm and moist to give the fungus a start ; but 
the disease is usually most troublesome under glass. 
Names of Plants. 
(A. R.) 1, Malv-a- mo-schata- alba ; 2, Echino-ps- Ritro ; 3, com¬ 
pletely withered up and without flowers ; 4, Thuya dolobrata ; 
5, Berbe-ris vulgaris ; 6, Fagus sylvatioa purpurea ; 7, Apple 
Keswick Codlin.—(M.D.) 1, Lilium tigrinu-m ; 2, Tritonia 
Pottsii ; 3, Phlox paniculafa var. ; 4, Yeroni-ca longifolia rosea.; 
5, Anemone japonica elegans; 6, Lathyrus latifolius.— 
(W. H. D.) 1, Euonymus radicalism variegata ; 2, Co-to-neaster 
Simonsii ; 3, Ribes- alpinuni ; 4, Abies nobilis glauca.— 
(T. .T. W.) 1, Davallia platyphylla ; 2, Adiantum macrop-hyllum ; 
3, Senecio Petasites-; 4, Phyilanthus pulc-her ; 5, Cassia corym- 
bosa ; 6, Fuchsia Riccartoni. 
Trade Catalogue Received. 
Thomas S. Ware (1902), Ltd., Feltham, Middlesex.—Cata¬ 
logue of Bulbs and Plants. 
Webb and Sons, The- Royal Seed Establishment, Wordsley, 
Stourbridge.—Bulb Catalogue for 1904. 
Wm. Watson and Sons, Clontarf Nurseries, Dublin.—Cata¬ 
logue of Carnations. 
James Cocker and Sons, 130, Union Street, Aberdeen.—List 
of Dutch Flower Roots. 
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CONTENTS OF THIS WEEK. 
PAGE 
Aldenliam House gardens ... 743 
Aquatics. 736 
Arnold Arboretum, the . 737 
Azalea puponica alba gr.uidi- 
tiora. 738 
Bellflower, a choice . 742 
Celosias . 741 
Colours of flowers, deiinition 
of . 736 
English gardeners, the group 
ing of . 733 
Epacris, culture of . 742 
Flo a er garden, the . 735 
Fruit-growing in Queens¬ 
land . 743 
Hardy fruit . 734 
Hardy herbaceous border ... 735 
Illustrations in this issue, 
notes on the . 729 
Iris aurea . 739 
Lagerstromeia indica . 746 
News of the week. 752 
New winter vegetalJe, the... 733 
Orchid houses, the . 734 
Orchids for all . 733 
PAGE 
Pepper Plants in India, 
disease amongst the. 746 
Potatos . 745 
Questions and answers . 752 
Seeds . 738 
Societies : 
Manchester Dahlia Show . 747 
Royal Caledonian Horti¬ 
cultural . 749 
Royal Horticultural. 747 
Society and association notes 751 
St. Louis tornado and the 
Weather Plant, the. 733 
Tea Rose, the hybrid . 740 
Winds and the temperature 746 
Winter Mignonette. 746 
ILLUSTRATIONS. 
Fritillaria cansehatcensis ... 742 
Lilium elegans Wallacei. 739 
Potato Derbyshire Suecess . 745 
Rose Ben Cant (see Supple¬ 
ment). 
Tuberous Begonia Venus ... 741 
