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How to Grow Avocado Seeds into a Tree

Persea americana

"How do I successfully grow an avocadoe plant from a pit? I often receive a tall, leafy plant while the pit is still in water. Life continues for awhile after I pot it in dirt. Then, after a few months at most, the leaves invariably wilt and the plant dies."
"I have grown an avocadoe from seed in my greenhouse, now it has grown out of its container and into the surrounding soil and is about six feet tall, I need to take it out and transplant it either into another pot or in the garden. My problem is that I can't seem to find the time it goes dorment. I live on the southern coast of Oregon and the weather is very mild and it seems to grow all the time.I am sure it is a Hass avocado. I could sure use some advise. Thank You: Shirley"
Avocado trees take many years before they produce fruit

Planting Avocado Seeds

The Avocado Tree, Persea americana, when grown by a hobby gardener, it is normally grown from seeds removed from ripened fruit. There are two acceptable methods of doing this, either by sprouting the seed in water or by actually planting the seed in soil.
Many people start avocado trees as novelty house plants by piercing the seed with its pointed end up, partially through with toothpicks on three or four sides to hold it on the top of a jar or vase partly with water and few pieces of charcoal (to keep the water sweet) just covering the base.
In 2 to 6 weeks, when roots and leaves are well formed the plant is set in potting soil. Unless they're moved into soil within a few weeks or months after germination, they'll begin to deteriorate.
Avocado seeds are just as easily sprouted in a well-drained 4- or 5-inch pot of porous, fertile soil. When planted this way the top of the seed should just barely peek above the surface of the soil. If the soil is kept fairly moist and the temperature is between 60 and 70 degrees, the seed will begin to sprout and a pretty, leafy plant will develop.
When the seedling reaches about 12 inches tall, it should be pinched back to about 6-8 inches to produce a rounder, fuller plant.

Growing Requirements for Avocados

Avocados grown indoors thrive in sun or in a good, lighted location. Once they've filled their pots up with healthy roots, they should be potted in larger ones. Repotting should be done in the spring. Well-rooted plants should be given a dilute liquid fertilizer every week or two. Watering should be done so that the soil never becomes really dry but isn't ever soggy and waterlogged. They should be fertilized with a balanced houseplant food every two or three weeks in the summer and about every six weeks during the winter. It's also a good idea to mist the leaves of your Avocado if the air in your home is very dry.
Indoor trees need low night temperatures to induce bloom. Potted plants should be moved outdoors gradually, so they can acclimatize themselves, and adjust to the new elements. Re-potting should be done in early spring.

Growing your Avocado Tree in the Garden

The Avocado Tree is hardy in zones 10-11.
Avocado trees are very versatile in their adaptability to different soils, but they prefer a rich loose sandy loam. They will not survive in locations with poor drainage.
The optimal pH level is generally considered to be between 6.0 and 7.0.
Avocados will grow in shade and in between buildings, but are only productive in full sun. The root system is extensive and will choke out nearby plants, so they should be given plenty of room--up to 20 feet.
However two or three trees can be planted in a single large hole to save garden space and enhance pollination. Once established the avocado is a fairly tough tree.
Once the tree is a year old, they should be fed four times yearly using a balanced fertilizer. Older trees benefit from feeding with nitrogenous fertilizer applied in late winter and early summer. Yellowed leaves (chlorosis) indicate iron deficiency. This can usually be corrected by a foliar spray of trace elements containing iron.