TUBEROUS BEGONIA GROWING HINTS—CONTINUED 
DROPPING OF BUDS 
Begonias although hardy and easy 
to grow under favorable conditions 
are affected by overwatering, too 
dense shade and lack of air and 
as a result will not bloom properly. 
Tuberous begonias require fresh air 
circulation and will drop their buds 
and flowers in a very few days if 
kept indoors. If the center buds fall 
before they open, it is usually a sign 
that the soil is kept too wet. Care 
should be taken to. avoid overwatering. 
In. the cooler coastal areas the use of 
peat moss should be avoided or used 
sparingly. If your plants become tall 
and spindling with large leaves and 
few flowers, there is insufficient light, 
this may be remedied by removal to 
a less shaded location. 
BEGONIA MILDEW 
For the past two years there has 
been a mildew problem particularly 
on the Coasial area of the Pacific Coast 
on Begonias of all types. 
According to the best information 
we have been able to obtain, mildew 
occuring on Tuberous Begonias and 
which appears as a grayish powder 
GARDEN SULPHUR 
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on the leaves is known as Powdery 
Mildew. 
On Rex Begonias and Begonias other 
than tuberous there is another type of 
mildew not showing the powdery de- 
posit on the foliage but being more 
on the damp off type. 
As mildew is not transmitted to the 
tuber, we suggest that anyone having 
mildew on their begonias should clean 
up their garden area by a thorough 
dusting of sulphur and by following 
the control shown here, thereby freeing 
them of this problem for the coming 
year. 
It is also advisable to give an oc- 
casional dusting or spraying as a pre- 
caution to gardens that have not 
shown mildew at any time. 
MILDEW CONTROL 
Dust the tubers with sulphur before 
planting. When the tubers attain their 
leaves—dust with sulphur every ten 
days thereafter until buds appear. 
It is advisable when buds appear 
to spray with Orthorix weekly until 
the blooms are opened, then only an 
occasional spraying with Orthorix, 
this should keep your begonia plants 
clean from mildew. 
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It is advisable to purchase these materials from your local Nursery 
if possible, avoiding the high cost of postage. 
