longevity of perennials

© EunYoung Sebazco

achillea

I have planted Achillea millefolium. I have noticed that they have been getting smaller or disappearing past year. A place where they are that would be perfect spot for them. One of my garden friends spilled a word ‘short-lived’ gear up to research about the longevity of perennials. When I select perennials, I consider their size, color, height, hardiness. I have never though about their longevity but I feel this is really I have to consider for long term gardening. From a article, if given proper growing conditions and good care, long-lived perennials often persist for 20 or more years. Short-lived perennials usually disappear within 10years. Here is a list of long-lived and short-lived perennials. I might need adding up some plants this spring or anyone wants to add more

Long-lived Perennials
Aconitum spp.
Alchemilla mollis
Aruncus dioicus
Baptisia australis
Cimicifuga racemosa
Dictamnus albus
Ferns
Ornamental Grasses
Hemerocallis spp.
Hosta
Iris sibirica
Liatris spp.
Narcissus spp.
Paeonia spp.
Platycodon grandiflorus
Pulmonaria spp.
Rudbeckia fulgida ‘Gold
Sedum spp.
Thermopsis caroliniana

Short-lived Perennials
Achillea millefolium 
Aquilegia spp.
Coreopsis grandiflora
Delphinium spp.
Dianthus spp.
Gaillardia x grandiflora
Gypsophila paniculata
Heuchera spp.
Leucanthemum spp.
Linum perenne
Lobelia cardinalis
Lupinus hybrids
Lychnis chalcedonica
Papaver nudicaule
Scabiosa spp.
Tanacetum coccineum

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