Page 15 - Griffin Gazette Summer 2016
P. 15

By Ken Rynearson, Product Consultant North America                Paramount Gorgeous rose
Poulsen Roser A/S; and Beth Engle, Griffin Assistant
Business Manager

While the Poulsen brand offers diverse and unique genetics,
the culture of these rose genetics is neither difficult nor
unique. Each Poulsen series can be produced from a variety
of cultural methods, based on product form.

At Griffin, we offer Poulsen roses in three forms: bare root,
50-cell trays and 4-inch liners. Availability may vary by series
and the time of year in which your inputs are scheduled for
delivery to your greenhouse. Which product form is the right
one at the right time?

Bare root                                                         Towne & Country Athens rose
For decades, bare-root roses have been the backbone of the
rose industry—and for good reason. They work for almost
everyone, regardless of the type of production facilities.
Plants are available starting in December and, depending
on availability and weather, until March or April.

Bare-root roses are fast to finish compared to either the
4-inch or 50-cell liners. Choose the bare-root option when
you’re looking for a relative quick turn. It’s also a terrific
choice when you’re producing large finished product, e.g.,
2-gallon, 3-gallon or larger containers.

Depending on quantity or variety selection, the lead time for
ordering bare-root roses is 12 months. Limited availability
is planned for December-March delivery. For larger orders
or non-inventoried varieties, consult your Griffin sales
representative to book roughly 18 months in advance
of delivery.

50-cell trays                                                     Courtyard Cheek to Cheek rose  Generally, 50-cell roses are delivered
Use of 50-cell trays can be an economical way to produce a                                       in late spring or summer for sales the
rose crop. Growers can consider using the 50-cell input for                                      following year. The Towne & Country
producing 1- to 2-gallon roses.                                                                  series, for example, can be planted
                                                                                                 in late summer or autumn to finish for
Towne & Country Pebble Beach rose                                                                Mother’s Day the following spring.

                                                                  National Parks Marakele rose   In southern climates, it’s also possible
                                                                                                 to produce a larger rose plant when
                                                                  Towne & Country Luray rose     planted in late summer. The plants
                                                                                                 need time to size up, in order to present
                                                                                                 flowers by early May to early June. We
                                                                                                 recommend ordering summer liners
                                                                                                 by March 1. Customers who desire an
                                                                                                 early spring plant date should book
                                                                                                 orders during the previous summer
                                                                                                 or fall.	

                                                                                                 4-inch liners
                                                                                                 “Half-plants,” another term for 4-inch
                                                                                                 liners, are a nice compromise between
                                                                                                 bare-root roses and 50-cell liners.
                                                                                                 The 4-inch liners are easier to plant
                                                                                                 compared to bare-root, and quicker to
                                                                                                 finish versus the 50-cell liners.

                                                                                                 Four-inch liners are best suited to
                                                                                                 container sizes ranging from 8-inch to
                                                                                                 5-gallon, depending upon how much
                                                                                                 production time you’ve allowed. The
                                                                                                 more time you have to put into the
                                                                                                 crop, and the more pruning done, the
                                                                                                 fuller your crop will be.

                                                                                                 Four-inch liners are available from May
                                                                                                 until September. Your Griffin sales
                                                                                                 representative can help you select the
                                                                                                 best inputs for your production needs
                                                                                                 and your target sell dates.
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