Product Name

Prime Jan™ (Pl.Patent Pend) Blackberry

Plant breeder Dr. John Clark, from the University of Arkansas, has recently released this new variety. This new type allows blackberry production in regions where most other varieties are not hardy. Prime Jan will fruit on one-year wood in late August and September. Berries will be a bit smaller and sweeter than Prime Jim. Recommended for home gardeners.

New Item! Price includes a royalty fee.

Plant Qty Price
5 plants $23.25
10 plants $39.10
25 plants $86.70
100+ $330.35
Sold Out For Season

currently limited to 5 or less

Variety Details

Best in Zones: 4-8

Flavor: Good

Berry Size: Small/Med

Firmness: Moderate

Freezing Quality: Good

Suited For: Home Gardener

Suggested # Plants for Family of Four: 5

Planting Info

SPACING
  • 18”-24” for reds and yellows; 20”-24” for blacks
  • Blackberries should be planted 3’-4’ apart
  • Recommend 8’-12’ between rows depending on machinery
IRRIGATION
  • Soak in water using Agri-gel™ for 1-2 hrs before planting
  • Water thoroughly after planting
  • 1” - 2” rainfall or equivalent per week
FERTILIZATION
  • Before planting add ½-¾ lb of 10-10-10 per 100 sq ft
  • Commercial growers should use 500 lbs per acre
  • An additional 1lb of 10-10-10 per 100 sq ft can be applied in July or August and in early spring in following years
  • pH: 6.0-6.5
WEED CONTROL
  • Regular cultivation is necessary during growing season
  • Roots are shallow–don’t cultivate more than an inch deep
  • Mulching during establishments can help control weeds”
  • Contact a local extension for chemical recommendations
TRELLIS
  • We suggest plants are supported by a trellis
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Additional Info

All plants are dormant, bare root, and ship from our Massachusetts nursery.

Plants are available for shipment in the spring only

We do not ship online orders outside the US.

It is best to plant immediately upon receipt.

If you are unable to plant immediately, refrigerate and plant as soon as possible. Do not add water. Keep in original packing to retain proper moisture.

Shipments to western states from mid-April on ship via UPS-3DAY for plant preservation.

Shipments to AK and HI ship via UPS-2Day.

Plants shipping to CA, HI, OR, and WA require a phyto-sanitary certificate.