Silverleaf nightshade – the beauty is a beast

Attractive flower of silverleaf nightshade
Solanum elaeagnifolium silverleaf nightshade flower

Silverleaf nightshade is a beautiful plant, but the beauty is a beast!  The silver leaves are attractive, but their blue flowers with prominent yellow stamens attract a lot of attention.

 

 

 

This plant’s attractive characteristics hide some unattractive features.  It is related to deadly nightshade and is itself listed among  plants toxic to both humans and livestock.  More than that, it is listed as a noxious weed in several states and acknowledged as a weed in most others.  It is, however, a relative of tomatoes, tomatoes, and chiles.  These are all members of the Nightshade family, Solanaceae, and most members of this family do contain toxic elements in some of the plant parts.

Spines on stems of silverleaf nightshade
Solanum elaeagnifolium silverleaf nightshade spines

If that was not enough it produces spines on most above ground parts of the plants.  While some plants produce more spines than others, and it has been reported that plants growing in humid climates produce few or no spines, for gardeners in the Southwest, this plant produces some spiny problems.

 

There are even spines on unopened flowers of silverleaf nightshade
Solanum elaeagnifolium silverleaf nightshade spines on unopened flowers

The unopened flower buds produce spines.

 

 

 

 

Spent flowers, leaves, stems, buds of silverleaf nightshade have spines
Solanum elaeagnifolium silverleaf nightshade spines on all parts

The spent flowers have spines. Spines can be found on leaves, buds, everywhere above ground!

 

 

 

 

There are spines on fruit of silverleaf nightshade
Solanum elaeagnifolium silverleaf nightshade spines on fruit

Even the fruit produce spines on their  sepals.

 

 

 

 

Clump of interconnected silverleaf nightshade plants
Solanum elaeagnifolium silverleaf nightshade cluster of interconnected plants

Silverleaf nightshade is a weed with a deep taproot that allows it to survive in very arid environments.  Even a small piece of root left in the soil will generate a new plant.  Plants in a clump are often attached to each other by underground stems, so that they can help support each other.  This makes them survivors, it also makes them weeds.

 

As weeds we try to remove them, but be careful, the spines easily break after piercing your skin and become difficult to remove.  These spines can sometimes even penetrate leather garden gloves!

So can there be anything good said about these plants?  Well, they are beautiful, but the beauty is a beast!  They are toxic, but like many toxic plants, the toxic principles can be curative when used properly.  They were used medicinally and as beneficial plants by native people.  They were even able able to use the ground, dried, fruit to curdle milk to make cheese.

Never the less, the beauty is a beast!

Hare barley is a harmful plant

Hare barley seed heads showing awns that can be harmful to pets
Hare barley seed heads showing awns

Hare barley and some other grasses,  such as foxtail barley and purple three awn grass, have characteristics that can be harmful to pets.  These grasses are harmful plants that have awns, long threadlike extensions from the florets in the seed head.  These awn have very small backward angled spines.  These awn can enter a pets eyes, nostrils, ears, or even penetrate their skin.  The backward spines prevent the awns from working out the way they entered, they only work deeper into the eyes, nostrils, ears, or skin.  A few years ago my pet Brittany, Joy, had one enter between her toes and work deeply into her paw.  She began limping and the veterinarian had to extract the awn.  This is when I learned that this is an extremely common problem for pets.

Hare barley seed heads developing
Hare Barley

In a year like this year when there has been little rain (just over 1 inch from October to late April), anything green seems to be a blessing, but that may not be the case, especially if you have pets.  In garden hare barley and foxtail barley are sprouting and the hare barley is beginning to produce seed heads.  I think I have eliminated purple three awn grass from my garden, but I will be watching for it.  All these grasses are pretty, so it is tempting to allow them to remain, but if you have pets it is best to eliminate these grasses.

There are herbicides labeled for management of these grass weeds and other harmful plants, but if you are like me and have pets you may prefer to use manual means of weed management.  Hoeing them when they first appear in late winter is helpful.  If they are numerous and you cannot manage them by hoeing, you can use a torch to burn them, but be careful that you do not start a fire or damage desirable nearby plants.  This year’s drought has been a blessing in limiting the number of plants that are growing to a relatively manageable few in my garden.  I have been pulling, digging, and hoeing them for several months.  Now, as the seed heads form and I can specifically identify the worst of the weed grasses, those with harmful awns, I can specifically target those plants.