The attack comes in May on spinach and lovage, in June on climbing bean and continues until the seeds maturity of this species. The aphid attack in spinach ranges between 2.5 - 15.2%. The intensity of attack was higher in second decade of May - 30.9%. The degree of attack was under 1.8%. The frequency of aphid attacks in lovage was higher in conventional agriculture, ranging between 0.1 % and 12.5%. In the Jun and July the F% was the highest - 15.2%. Climatic conditions (summer rains rushed), parasites and predators from colonies of aphids decreased the intensity of pests attack from 15.6% to 0.2%. In organic agriculture the frequency of aphid attack was less, ranging 0.1% and 8.1%. The intensity of aphid attack was lower (0.1 - 12.5%) comparing with the conventional agriculture attack, due to the higher number of parasites and predators from aphid colonies. The aphid attack in climbing bean began in second decade of June, and the frequency of attack was 0.2 %. From the end of July to August it had reached 3.2%. The intensity of the attack in climbing bean was also low, ranging between 0.1 and 6.9%. The intensity, frequency and degree of aphid attack were very high on the weeds. The Chenopodium album had the highest frequency, intensity and degree of aphid attack. Cirsium arvense had a lower intensity a degree of aphid attack. Cicorium intybus had the lowest aphid infestation.