Fruits

How to Plant, Grow, and Care for Marionberries

A little bit sweet and a little bit tart, the marionberry is a delightful and delicious edible to add to the garden. Gardener and berry grower Lindsay Miller explains how to grow and care for marionberries.

Vermont has maple syrup. Florida....

has oranges. Oregon has marionberries. Named for the Oregon county in which it was developed, marionberries are the result of cross-breeding ‘Chehalem’ and ‘Olallie’ blackberries. The final plant, which was released by the University of Oregon and the United States Department of Agriculture in the 1950’s, was the juicy, sweet-meets-tart ‘Marion’ blackberry, more commonly referred to as marionberry.

Oregon continues to champion the marionberry to this day, and as a result, this delicious caneberry is widely adored by commercial growers and home gardeners alike. In 2008, Oregon growers produced over 39 million pounds of blackberries, with marionberries accounting for two-thirds of that crop. The state of Oregon even designated marionberry pie as its official state pie in 2017.

The good news is that you don’t have to live in Oregon to enjoy growing (and consuming!) this beloved berry. Under the right conditions, marionberry is an easy-to-grow plant that thrives in the home garden.
What Is It?
Marionberries are a cane-producing perennial plant, along with raspberries and other blackberry hybrids. From their crown, they sprout thorn-covered, flexible, woody stems called canes, which will produce leaves, flowers, and fruit.

Marionberries, like other blackberries, have a unique growth habit. While the roots and crown are perennial, the leaf and fruit-bearing canes above are biennial.

Vegetative first-year canes (called “primocanes”) overwinter on the plant and then produce small white flowers, and subsequently, fruit in their second year. At this stage, they are called “floricanes”.

Floricanes flower in late spring, and the plump, aromatic berries that appear in mid July are highly sought after for their sweet, yet earthy-rich flavor. If not immediately gobbled up fresh, berries can be turned into jams, baked into pies and tarts, tossed into salads and cocktails, and even cooked into pork chops.

Planting
Marionberries are difficult to start from seed and are generally grown from a transplant or bare root. For both methods, wait until the threat of frost has passed in the spring, and the soil can be easily worked.