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Mulberries!

A cluster of ripe mulberries on a tree.
A cluster of ripe mulberries on a tree. Greg Wagner, Nebraska Game and Parks Commission

By Greg Wagner

Maybe it’s just the kid in me, but I love to pick and eat mulberries!

Growing up on the rural western edge of Gretna, NE, my buddies and I would always bug the area neighbors and farmers for permission to pick and eat ripe mulberries along their woodland edges and fencelines this time of year. It marked the start of summer for us. Ah, those were the days…

Fast-forward to present-day.

Our mulberry trees, at least in Omaha, have begun producing their mulberries, so it’s time to start harvesting them. With the high amount of rainfall we’ve had, the trees appear to be loaded with them!

Okay, I know some of you despise mulberries, because they drop those dark purple-reddish berries that stain sidewalks, driveways, lanes and vehicles, but they’re such an abundant source of wild fare this time of year.

Instead of cussing their staining powers, get foraging and celebrate those scrumptious, free berries!

Come on, how many of you fondly recall the days of having purple feet, lips, tongue and hands, huh?

But, how well do you really know the mulberry tree and its fruit, huh?

Let’s examine the mulberry a bit closer, shall we?

With many varieties worldwide, the Mulberry (Morus spp.) is a small to medium-sized, deciduous tree native to the warm, temperate, and subtropical regions of Asia, Africa, and the Americas. The three common species of mulberry throughout the United States are white (Morus alba), red (Morus rubra), and black (Morus nigra). All three have similar characteristics, which may make them difficult to distinguish. Records from the University of Nebraska-Lincoln indicate the red mulberry is native to Nebraska (eastern portion of the state), but that the introduced white mulberry from China to eastern U.S. (considered invasive) is also found here (eastern and central Nebraska). The red mulberry was an important food source and medicine of Native Americans.

The mulberry, a shade-tolerant, lowland species often growing in the under story of woodlands, is easy to spot. It looks sort of like a “blackberry tree” with light-colored bark and lightly-serrated leaves with prominent, light-green veins. From a broad perspective, the mulberry occurs in wooded river valleys, ravines, and along moist sheltered slopes with richer soil. More specifically, mulberries tend to thrive in many places like woodland edges, fence rows, utility lines, alleyways, sidewalks, vacant lots, etc. Mulberries are fast-growing when young and can spread and sprout new trees through suckers via root systems (a sucker is a vegetative, adventitious growth coming from the root system of a mulberry tree). According to ecologists, mulberry seeds have been spread through the passing of their seeds in the feces of vertebrates.

Mulberry trees are commonly dioecious, meaning that they are male or female, and the female-bearing trees require the pollen of the male, non-bearing trees to set fruit. Actually, mulberry trees are either dioecious or monoecious, and sometimes will change from one sex to another.

The fruit of the mulberry is rather interesting. Technically, mulberry fruit is an aggregation of small fruits arranged concentrically around the central axis as in the blackberry. Each fruit measures about 2-3 cm (1/2 inch)  in length. In most species, mulberries feature purple-red color while ripening; however, there can be white, red, purple or multiple variegated colors on the same berry. Generally, the darker the color of the mulberry, the sweeter it is! Keep in mind that unripe mulberries may cause mild stomach upset.

The mulberry is a plant belonging to the family Moraceae, and genus Morus. Allergic sensitization to mulberries has been reported as both food allergy or respiratory allergy. Check with your allergist or physician for more information before deciding to pick them and/or eat them.

Mulberry fruits in Nebraska are generally ripe in late spring and early summer. From my experience, just after the 4th of July in the Omaha area, the mulberry harvest season typically ends.

Historically, many Native American peoples utilized the mulberry tree and its fruit. On the Great Plains, the Omaha tribe ate the red mulberry as a fresh fruit.

Besides we humans, wildlife utilizes the mulberry tree as well. In Nebraska, the leaves and twigs provide browse for white-tailed deer. The leaves of the tree, particularly those of the white mulberry, are the main diet for the silk worm. Also, the leaves provide larval food for two butterflies — mourning cloak and red admiral. An array of birds and small mammals eat the fruit of the mulberry. In fact, the mulberry is rated by the Cornell University Laboratory of Ornithology as one of the top seven most-important plants for birds. Studies show the fox squirrel particularly likes the fruit of the mulberry.

Fish eat ripe mulberries, too, especially channel catfish and common carp. Mulberries make for superb summer fishing bait, particularly where mulberry tree branches hang over the water of ponds, lakes, reservoirs and rivers. Some anglers tie and use mulberry flies to catch catfish and carp.

Fresh mulberries are consumed in so many ways.

You can snatch them right off the tree and devour them, if you wish.

One cautionary note to pass along regarding the mulberry trees in your neighborhood or neck of the woods. When talking with the landowner to get permission to pick mulberries from a given piece of property other than your own, make certain those trees have not been sprayed or treated with harmful chemicals or are not subject to a lot of vehicle exhaust fumes along roads.

For the Nebraska state park lands, by regulation, a person needs to consult the area park superintendent for permission to harvest mulberries for personal use by hand. If permission is granted, a current, valid state park entry permit will be required on the vehicle entering the park premises. Regarding state wildlife management areas, the picking or removal of fruits and berries is prohibited unless special permission has been granted by the wildlife division of the Nebraska Game and Parks Commission. Prior to foraging for any wild edibles on a given tract of public land, make certain to contact the governing authority of it to find out if foraging is allowable to do or not.

If you do plan to eat mulberries raw, keep in mind they have a very short life in the refrigerator, about 3 days (which is why you don’t see them fresh in the store). So, don’t collect a bunch and then waste them. However, you can dehydrate mulberries in the sun, just make wild animals cannot get to them and bring them in at night, or put them in a dehydrator.  Once they are fully dry, they will keep all year! Dried mulberries are a wonderful snack treat in the winter. Some folks even freeze their mulberries and blend them into smoothies at a later date.

If you can keep your hands off of them, mulberries will keep in the refrigerator, unwashed in a covered container for several days. Or freeze the berries for later use. Wash them and gently pat them dry, then pack them in freezer bags in a single layer. This will ensure that the berries remain separate once they are frozen. Frozen berries will store for several months.

Mulberries provide very tasty toppings for everything from ice cream to yogurt to breakfast cereals, too. The small, flavorful fruit of mulberries have been used for centuries in pies, cakes, pastries, jams, wines, teas, salads and syrups. Mulberries work well in almost any recipe that calls for blueberries or blackberries. They can even be mixed with other berries in various fruit salads. Some folks add gooseberries and rhubarb to mulberry desserts to bring out the tartness of the fruit. Since they’re not as sweet and more tart, they tend to do better in sweeter recipes, like jams, cakes, pies, scones, etc.


Tips for Bulk Harvesting Mulberries

  1. Grab an old, clean, light-colored sheet from the closet.
  2. Spread it out under the mulberry tree.
  3. Shake the branches directly over the sheet. All of the ripe, best-tasting berries just fall off and onto your sheet! If you’re careful, you can also use a ladder to reach some of the higher branches.
  4. Gather the corners of the sheet and slide all the berries into the middle of it.
  5. Gently slide the pile of berries to the edge of the sheet and pour the berries into a large bowl or pail. Repeat the process going around the remainder of the tree.
  6. Sort and rinse your berries with cold water as you will get some small twigs and leaves in this process.

Tasty & Nutritious

What’s truly fascinating though about mulberries is that they are not only quite palatable, but they are a highly nutritious food. They are chocked full of vitamins and minerals, such as Vitamin A, Vitamin C, Vitamin E, Vitamin K, iron, folate, riboflavin, calcium, magnesium, phosphorus and potassium. These berries are also a great source of dietary fiber and protein making them high energy foods. Nutritionally, the mulberry is considered a “superfood” due to its high antioxidant, high energy content and virtually nonexistent fat content.

Counting calories? There are 43 calories in 100 grams (3.5 ounces) of mulberries.

Mulberries also contain flavonoids and phyto-nutrients and are extremely high in anthocyanins which help to fight against cancer as well as reduce aging and neurological diseases, inflammation, diabetes, and bacterial infections.  The berries also contain resveratrol, a powerful blood flow increasing antioxidant which you have probably heard promoted through the wine industry. Supposedly, rubbing the juice from mulberries all over your scalp can help make your hair roots stronger and promote hair growth. But don’t forget that mulberries are notorious for their stains. Interestingly, it has also been said that mulberries speed up the rate at which alcohol is digested into our bodies and gets rid of the alcohol more quickly than our bodies can on their own.

Even the leaves from the mulberry tree can be used for teas that supposedly help regulate blood sugar levels plus assist in reducing the level of bad cholesterol in the body.

Dead mulberry tree wood is also useful. When it is burned in a meat smoker, it produces a sweet smelling smoke similar to apple.

When it comes right down to it, eating seasonal mulberries offers the consumption of a product straight from nature that nourishes both bodies and relationships as well as a chance to build outdoor memories and create an appreciation for our natural world close to home.

MULBERRY PIE

1 double basic flaky crust
4 cups (2 lb.) mulberries
¾ cup sugar
¼ cup flour
3 tablespoons lemon juice 

Preheat oven to 400 F. Roll out bottom crust, press into pan and let chill in the refrigerator.  

Clean berries and snip the stems. Mix with sugar ,flour and lemon juice. Let sit for 15 minutes. Pour berries into the bottom crust.

Roll out remaining pie crust and either lay on top, cutting to vent or use cookie cutters to make shapes and decorate the top.

Bake for 15 minutes and then turn oven down to 350 F. Bake for another half hour, rotating halfway through or until top is nicely golden.

Enjoy!