Seldom grown in Hawaii. There are also many hybrid seedlings which have desirable fruit and good bearing characteristics. Many of these have been grafted and grown as varieties. Regardless of soil, it is critical to plant avocados in well-drained locations to minimize avocado root rot. Avocados should always be protected against strong winds and salt spray.
Avocados are sensitive to over-watering.
However, care must be taken so that trees have adequate water. Avocado trees should be watered 1-2 times per week, depending on weather and soil conditions. If in doubt, check the soil moisture in the root zone with a soil auger to determine when to irrigate. In planting avocados, grafted trees should always be used. Planting holes should be about twice as wide as the tree balls but no deeper than necessary.