If it were my garden I'd do the insecticidal soap thing if I was really worried. You can buy it at home depot or wherever or you can make it. You may have to apply and reapply later.
Here's some more recipes that may be helpful:
http://naturalgardeneraustin.com/information/recipes/soapandpepperspray.html
A healthy plant will naturally resist aphids and such. Make sure its getting enough food, light, etc.
Seaweed (maxicrop brand) is always good for prevention but certainly won't treat anything. I'm not sure what it does exactly but its organic and it stimulates good health in plants. Regular seaweeding, I'm told, will prevent some problems. I use seaweed fairly regularly and have had good results. I can pick maxicrop seaweed up at my grocery store.
Here's some more recipes that may be helpful:
http://naturalgardeneraustin.com/information/recipes/soapandpepperspray.html
A healthy plant will naturally resist aphids and such. Make sure its getting enough food, light, etc.
Seaweed (maxicrop brand) is always good for prevention but certainly won't treat anything. I'm not sure what it does exactly but its organic and it stimulates good health in plants. Regular seaweeding, I'm told, will prevent some problems. I use seaweed fairly regularly and have had good results. I can pick maxicrop seaweed up at my grocery store.