growing narcissus
Sandra de Nijs (Tue, 31 Jan 2012 07:32:07 PST)
According to "Daffodils in Florida" by Linda and Sara Van Beck (an amazing book) the problem could be "too much early heat, daffodil flowers collapse and buds die between 27.7C and 28.8C". The American Horticulture Society has developed a zonal map based on the number of heat days. "Colder winter microclimates do not enable more daffodils to perennialize if there is no commensurate lessening of hot spring weather".
Sandra de Nijs, Orlando, Florida
We have a Mediterranean climate. With winter rainfall but
only about
35 cm per year. Winter temperatures rarely go below
freezing and we
might have frost 5-8 times per year. Summer temperatures
usually do
not get above 30C. Using USDA climate zones I place us as
zone 9/10
border. I grow lots of narcissus but have trouble keeping N.
asturiensis, N. cyclamineus and N. poeticus.
Harold