Technical Abstract: Regularly applied sprays of a particle film (Surround® WP) greatly enhanced the growth of citrus trees on a poorly drained Winder soil at Fort Pierce, FL. After three years of applications every 3 or every 4 weeks, Surround-treated trees had at least 5 times the mass, 6 times the canopy volume, and approximately 4 times the cross-sectional area of the tree stems at the graft union. The larger Surround-treated trees attracted a higher number of Diaprepes root weevil (Diaprepes abbreviatus) adults per tree, but an equivalent number of egg masses per tree compared with the control trees. Thus, oviposition per adult was reduced on Surround-treated trees. The number of larvae per tree recovered from the roots of excavated trees was greater from Surround-treated trees compared with control trees. The data suggest that Surround particle film greatly enhanced the growth of citrus trees grown in a poorly drained soil where trees were stressed by edaphic factors. The deterrence to oviposition by D. abbreviatus was insufficient to significantly reduce the number of root weevil larvae per tree feeding on the roots. However, the more vigorous trees resulting from Surround applications may be more resistant or tolerant to root weevil feeding.