Seed Packet order reference: 1239 (Internal HPS Number M05178)
Seed Packet
The 2023/2024 Seed Distribution Scheme is now open for orders. Please note the order number and use the order forms on this page
- Notes:
Search links (for Members)
Support the HPS by becoming a member and you will see multiple search links for this species leading you to a wealth of additional information via websites provided by
- The RHS
- Gardeners World
- World Flora Online
- The US National Gardeners Association
- Trees and Shrubs Online
Extended plant information for Silphium perfoliatum
Support the HPS by becoming a member and you will also see additional information on this plant (where it exists) such as:
- Full plant details for those in the Conservation scheme
- Details of their hardiness zones or US zone codes
- Seed sowing tips
Not all plants have all this information, but many do.
Articles and Publications linked to this species
Articles and Publications linked to this genus
Additional plant photos and information
Plants in the genus
Silphium perfoliatum
Silphium perfoliatum
Silphium perfoliatum
Silphium perfoliatum
Silphium mohrii && Miscanthus sinensis ‘Red Chief’
Silphium mohrii
Silphium mohrii
Silphium laciniatum
Silphium integrifolium
Plants in the family
Helenium ex ‘Sahin’s Early Flowerer’
Helianthus x multiflorus
Cosmos bipinnatus ex Sonata Series
Helianthus ‘Shall We Dance’
Leucanthemum x superbum ‘Gruppenstolz’
Rudbeckia laciniata ‘Starcadia Razzle Dazzle’
Calendula officinalis ex ‘Orange King’
Tithonia rotundifolia
Pachystegia insignis
Ligularia hodgsonii
Leucanthemum x superbum ‘Marion Bilsland’
Echinacea purpurea ‘White Swan’
Erigeron leiomerus
Ligularia dentata ‘Osiris Fantaisie’ (v)
Heliopsis helianthoides var. scabra [Summer Sun]
Vernonia gigantea
Silphium integrifolium
Catananche caerulea
Symphyotrichum lateriflorum ‘Lady in Black’
Gazania rigens
Echinacea ex ‘Aloha’ (PBR)
Tetraneuris scaposa
Cynara cardunculus AGM
Eupatorium purpureum