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Catalog Abbreviation Definitions

 

 

 

 

 

 

 

 

 

 

Trial 2000 and Trial 2001 are new cultivars acquired in 2001 and 2001. They are under careful evaluation in our two year Northstar Daylily Field Trial Program.sm.

13450 Willandale Road | Rogers, MN 55374-9585 | 763-428-7601

Selecting Daylilies

All cultivars offered are hardy to Minnesota's long cold winter and floriferous in Minnesota's short growing season. We aim to have cultivars that are vigorous and floriferous with outstanding garden value. We try to include as much pertinent information as possible about each cultivar to aid you in your selection of plants. This information comes from personal observations of the plant.

All new cultivars enter our two year Northstar Daylily Field Trial Programsm. These new cultivars are carefully chosen for their distinctiveness, hardiness, superior bloom, garden value and superior breeding characteristics. They will have to prove themselves floriferous and winter hardy over two years before we will offer them in our catalog. These trial cultivars are distinctive, beautiful and often expensive. They show exciting new directions in breeding improved garden plants for northern gardeners. Unfortunately, they are not always hardy or floriferous in our climate. In spite of our diligence, we lose or discontinue a number of these new introductions. We have found that many cultivars perform somewhat differently from that reported by the hybidizer. Because we are farther north and the climate isn't as warm or long as in the southern areas of the US, colors are often better and darker and flower sizes are sometimes even larger than at a more southern location. We give all our cultivars the normal care and culture appropriate for daylilies except for a winter mulch. The only time we use a winter mulch is when they are newly planted in the fall. This decision was made because wish to maintain the daylily as the carefree beautiful perennial it has always been. In addition, no one should have to apply a winter mulch or run the risk associated with tender cultivars. All new cultivars must perform on their own merits. They must bloom in our short Minnesota summer and be hardy in our tong Minnesota winters. A few cultivars registered as rebloomers even rebloom here. The shortness of our season usually precludes rebloom on many cultivars.

We are very close to the line separating plant hardiness zone 3b and 4a. Every third or fourth year we have a mid-winter thaw lasting several days which usually melts the snow cover and sometimes initiates new growth on our evergreen and semievergreen daylilies, sometimes to their detriment. In spite of our extreme winter temperatures - down to minus 40 degrees F., we do not mulch our display beds with hay or straw every fall. This seems to be a more accurate test for Minnesota grown trial plants. We mulch only those new cultivars planted in the fall. Winter mulch keeps the ground temperature warmer longer and gives the plants more time to develop new roots. You should do this with your new plants. Their performance will be improved the next year. Be sure to ask for our special handout on northern daylily culture. the breeder in many cases or it comes from our

The abbreviations or codes used to describe basc dayliliy characteristics in our catalog are as follows:

Tetraploid plants are preceded daylily characteristics in this catalog by an ''*", Tetraploid plants are plants with twice the normal number of chromosomes. Tetraploids tend to have somewhat larger flowers with deeper color and a longer and slightly later bloom season. They also tend to be a tougher flower and plant. Normal diploid plants do not have an asterisk.

Cultivar name is given by the breeder or hybridizer.

Hybridizer and the year of introduction are given in parentheses.

Height of the plant in bloom is given next.

Season of bloom is unique to each cultivar. So are its rebloom characteristics - some are immediate and others are later.

EE.....extra early which is middle May to early June in Minnesota.

E.......late June

M.......midseason - generally through July. Peak is generally the middle two weeks of July.

ML.....midlate which is usually August.

L.......late season or late August or early September.

VL.....very late season in September and early October until frost.

Rebloom (Re) Many modem cultivars rebloom in southern locations because of the longer and warmer growing season. Unfortunately, rebloom in Minnesota is often not possible because of our short 130 to 150 days growing season. However, some cultivars do rebloom here and these are noted. Rebloom information about cultivars hardy to Minnesota is of special concern here at Northstar Nurseries. Rebloom anywhere is generally dependent on good culture and regular watering.

Extended blooms (Ext.) These are cultivars whose single flowers last more than sixteen hours. Diameter or width of the flower is given in inches.

Nocturnal (Noc.) These are cultivars that bloom in late afternoon and presenting fresh flowers at the end of the day. They last most of the next day and even into the evening. They are usually deliciously fragrant in the evening and are wonderful planted next to a patio or outside a bedroom window.

Descriptions are usually inadequate since the flower is generally different than what we imagine it to be from the written description. As a minimum, we give the American Hemerocallis Society registration description. However, we also give our own observations of its field performance. Additional information from the hybridizer is given for new trial plants.

Dormant or Semi-evergreen or Evergreen biologies are given next. All cultivars offered are hardy and will grow and bloom in Minnesota. For the northern gardener it is wise to concentrate on dormants until you become totally obsessed with daylilies. There are now many evergreen and semi-evergreen cultivars that are hardy in the north but require a little extra care in the spring.

Display plants are cultivars that have proven themselves to be hardy to Minnesota but are not yet large enough to divide and have divisions available for customers. If you see something you absolutely must have, place an order for it now and it may be available later in the season.

The best way to select daylilies for your personal garden is to see the plants in a garden setting and select the cultivars that appeal to you. All things considered, no matter how much information is available and how well written a description, seeing the actual flower and plant in bloom is the single best way to appreciate and evaluate the distinctiveness, quality, and beauty of each cultivar. You can then choose those that suit your taste and your garden. Come visit us at Northstar Nurseries. You're in for a horticultural treat.

 

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