Hardiness
Here is the annual/perennial categorization of the flowers that we have grown in our zone 5 garden:
Here is the annual/perennial categorization of the flowers that we have grown in our zone 5 garden:
Annuals
Annuals
Canna indica (bulbs must be dug up and stored for the winter)
Canna indica (bulbs must be dug up and stored for the winter)
Canna 'Robert Kemp' (bulbs must be dug up and stored for the winter)
Canna 'Robert Kemp' (bulbs must be dug up and stored for the winter)
Salvia coccinea (This may occasionally reseed, but one cannot count on that in zone 5.)
Salvia coccinea (This may occasionally reseed, but one cannot count on that in zone 5.)
Salvia exserta (This may occasionally reseed, but one cannot count on that in zone 5.)
Salvia exserta (This may occasionally reseed, but one cannot count on that in zone 5.)
Salvia subrotunda (This may occasionally reseed, but one cannot count on that in zone 5.)
Salvia subrotunda (This may occasionally reseed, but one cannot count on that in zone 5.)
Perennials
Perennials
Agastache rupestris (the hardiness here is marginal and could die in a cold winter.)
Agastache rupestris (the hardiness here is marginal and could die in a cold winter.)
Reseeding annuals
Reseeding annuals
These only need to be planted once, and will reliably reseed in your garden.
These only need to be planted once, and will reliably reseed in your garden.