Triple Crown Blackberry Bush

The triple crown blackberry (Rubus fruticosus 'Triple Crown') is a hardy blackberry that with proper care, will provide you with fruit for many years to come. These semi-erect, thornless canes can either be trellised or left free-standing with annual pruning. Growing to a height and width of 3-5 feet they do not spread and are not considered invasive. The triple crown can tolerate a wide range of climates but prefers moist, well draining soil. If you have a heavy clay based soil, consider a raised bed to ensure better drainage. Triple crowns are grown in USDA growing zones 5-9 and will produce fruit starting in June or July depending on your location. This variety of blackberry is self fertile, however you will get a larger crop with the addition of more plants.

Selecting a location: When scouting out a spot for your blackberry bushes, avoid low sitting areas of your yard that collect a lot of standing water or that may be prone to flooding. Also, keep in mind the amount of sunlight that area gets a day. Blackberries prefer full sun but can tolerate partial shade. For the best berry production make sure that your bushes get at least six hours of sunlight each day. For a hedge, plant your blackberries about three feet apart.

Planting Directions:
1) Once you have the location for your bushes selected dig a hole three times as wide as the root ball and just as deep.
2) Take a pitchfork or shovel and run it along the sides of the hole to loosen the soil and remove any dirt clumps, rocks, or grass from the hole.
3) When it’s clear of debris, place your blackberry bush in the hole and make sure that it’s level with the ground and backfill the hole. Use a mixture of your native soil (60%) and sandy compost (40%) to fill the hole. Tamp down the soil as you fill to remove any air pockets that may have formed.
4) Once you’ve finished this process, give your bush a long drink of water and mulch around the base to conserve soil moisture.

Watering: Keep the soil moist, but not over saturated. Blackberries need about an inch of water of week and more during times of drought. Check on your soil once a week, if it’s starting to dry out then it’s time to give your bush more water. Due to the shallow rooted nature of these plants, they shouldn’t dry out down to six inches below the surface of the soil. However, be careful not to overwater your plants, it’s important not to over saturate the soil. The amount of water needed will depend on your climate and the time of year.

Fertilizer: Blackberry Bushes don’t need regular fertilizing unless you know that your lawn is lacking in nutrients. Also, fertilizing your bushes can increase growth and fruit production. You’ll know when your blackberry bush needs fertilizing because it’s leaves will show some signs of discoloration. It’s best to fertilize early in the spring before new growth starts to emerge, then again after your berry harvest. Use a well-balanced, general all-purpose fertilizer like formula 10-10-10.

Pruning: Pruning will help increase your blackberry crop and keep your bushes healthy. After a year of growth in the early spring, take a sterile pair of sharp hand pruners and remove the tips of each woody blackberry cane. If they’re shorter than 24 inches long, only remove the tip back to about an inch. This will cause the bush to branch out wider and produce more berries.

After your berry harvest, it’s time to clean your Blackberry Bushes up. Blackberries will only produce on canes that are two years old, meaning once the cane has produced berries, it won’t produce more. Prune spent canes back to promote the growth of new ones.

Weed Control: The best method of removing weeds and suckers from around your blackberry bushes is to get a firm grasp on them and pull them upwards out of the ground in a twisting motion. Placing a 3 inch thick layer of mulch around your bushes to prevent weeds from growing. Mulch will also help the soil retain moisture.

Pests and Diseases: Some of the most common pests for Blackberry shrubs include spider mites and birds. To rid of bugs like mites or worms, spray your bush with an all-natural organic pesticide. Birds can be trickier to get rid of. Place fake owls or snakes around the bushes to scare them, or cover your bushes with bird netting.

Common diseases for Blackberries include different types of mold and fungi. These can be prevented by removing dead or damaged branches. Doing so will prevent chances for infections and the spread of pathogens. If you see any spotted leaves or branches, remove them. Molds and fungi can be treated with the use of organic fungicides.

Pollination: Most Blackberry varieties are self-pollinating. However, having two or more shrubs will greatly help with pollination and you’ll have a lot more berries to harvest. With multiple shrubs, more pollen is transferred from bloom to bloom by natural pollinators like the wind and bees.