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.
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.
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
abbreviations or codes used to describe basc dayliliy characteristics
in our catalog are as follows:
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.
name is given by the breeder or hybridizer.
and the year of introduction are given in parentheses.
of the plant in bloom is given next.
of bloom is unique to each cultivar. So are its rebloom characteristics
- some are immediate and others are later.
early which is middle May to early June in Minnesota.
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
VL.....very late season in September and
early October until frost.
(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
blooms (Ext.) These are cultivars whose single flowers last
more than sixteen hours. Diameter or width of the flower
is given in inches.
(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.
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.
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.
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.
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