Category: Seed of the Week (Page 135 of 167)

Seed of the Week: Olives

You may have seen the mystery seeds from last week when you pitted an olive. The ones in the photo were lying on the ground under an olive tree, Olea europaea.

Olive trees are originally from the Mediterranean region, where much of the world’s olive oil production still occurs. In the United States, olives grow in California and Arizona.

Olives are small trees, sometimes with multiple trunks.

The trunks of older trees are often gnarled and twisted, giving the trees and interesting look.

The leaves are a lovely greyish-green.

The flowers are greenish-white and are pretty much inconspicuous. Olive pollen is a known allergen. Here in Arizona a sterile variety of olive (that doesn’t produce pollen) has been developed for those who simply want to use the tree for ornamental purposes.

The fruit of the olive is green to red at first…

Over time the fruit turn black and drop off the tree.

Many newcomers to Arizona see the olive fruit and wonder if they can eat them, but olives straight from the tree are not edible. The fruit needs to be leached in salt and vinegar and then processed before it is good to eat. Or the fruit can be processed into oil.

You can grow olives from the pits, but of course the new plants won’t necessarily resemble the parent tree. Botanists have tricks to weaken the hard pit and increase the chance of germination, such as gently cracking the surface.

All this talk about olives has made me hungry. Maybe it is time for an egg salad sandwich with olives.

Do you have a favorite way to eat olives?

Seed of the Week: Asparagus Fern

Yes, those hard round black seeds from last week’s mystery seed post were from an asparagus fern, Asparagus densiflorus.

This particular plant is Sprenger’s Asparagus Fern, Asparagus densiflorus ‘Sprengeri.’

Originally from South Africa, it is a common houseplant in more northerly areas. Here in Arizona it is a hardy survivor even when planted outside in the ground. In some parts of the world, that hardiness has turned it into a noxious weed.

The red berries show that the plant is not truly a fern, because it produce delicate white flowers and fruit rather than spores. It actually belongs to the lily family.

The red berries are not edible by humans, although they are eaten by birds. The plant is considered to be poisonous.

Most people buy their plants from a nursery, but you can grow new plants from the seeds inside the berries.

Photograph by Frank Vincentz

One interesting feature of this plant is rarely seen because it is underground. The roots have puffy tubers. I think the tubers help it store water for times of drought. They also swell and cause the plant to burst their pot after a time. My son calls one of our asparagus ferns “Buster” as in “Pot-Buster.”

Although asparagus ferns are lovely plants, do you see why I originally took this photo?

Do you grow any asparagus ferns?

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