| ENEMY |
DAMAGE |
CONTROL |
| Begonia (cont.) |
|
|
| Aphids |
Green, sometimes brown |
DX Aero-Spray. |
| |
lice on foliage. |
|
| Leaf nematodes |
Brown blotches on leaves. |
Keep plants separated; |
| |
|
avoid handling; dip in hot |
| |
|
water, 115-118°F.for 3 |
| |
|
minutes. |
| Black vine wee- |
Roots of tuberous begonias |
Treat soils with chlordane. |
| vil |
eaten by grubs. |
|
| Botrytis blight |
Gray mold-in moist green- |
Avoid syringing; remove |
| |
houses. |
infected parts. |
| Oedema |
Swellings on leaves from |
Do not water too much in |
| |
over-watering. |
cloudy weather. |
| Birch |
| Birch leaf |
Large, conspicuous brown |
Spray with lindane or |
| miner |
blotches in leaves. |
chlordane, starting in May. |
| Bronze birch |
Trees killed from top |
Cut out infested parts be- |
| borer |
down. |
fore April. Spray with |
| |
|
DDT. |
| Cankerworms |
Holes in leaves. |
Spray with lead arsenate or |
| and other |
|
DDT. |
| caterpillars |
| Aphids |
Small yellow and/or large |
Spray with lindane or nico- |
| |
green lice often cover |
tine and soap. |
| |
leaves. |
|
| Bittersweet |
| Euonymus scale |
Thin white scale all over |
Dormant oil spray, or Mal- |
| |
vines. |
athon for crawling stage. |
| Aphids |
Black or green lice on new |
Any contact spray. |
| |
shoots. |
|
| Blackberry |
| Blackberry |
Tips curl and stop grow- |
Spray at once with nicotine |
| psyllid |
ing. |
and soap. |
| Rose scale |
Round white scales on |
Dormant lime-sulfur spray. |
| |
canes. |
|
| Bramble spot |
Numerous small spots on |
Dormant lime-sulfur spray. |
| anthracnose |
canes, light centers, reddish |
Fermate before bloom and |
| |
margins. |
after picking. |
Garden Plants and Their Problems
