Plants That Flower In May
- Ajuga reptans
- Aquilegia vulgaris
- Bellis
- Campanula
- Cheiranthus
- Dicentra spectabilis
- Dorenicum plantagineum
- Epimedium spp.
- Euphorbia polychroma
- Iberis
- Incarvillea delavayi
- Iris
- Lunaria
- Malcolmia
- Myosotis
- Nepeta mussinii
- Omphalodes cappadocica
- Paeonia officinalis
- Papaver orientale
- Polygonatum hybridum
- Pyrtethrum roseum
- Tiarella cordifolia
- Trollius hybridus
- Veronica gentianoides
- Viola [Annual]
Perennials
- Iris
Rockery Perennials & Alpines
- Alyssum
- Androsace
- Antennaria
- Arenaria
- Armeria
- Aubrieta
- Cerastium
- Dianthus
- Dryas
- Erinus
- Gentiana
- Haberlea
- Iberis
- Iris
- Lewisia
- Onosma
- Penstemon
- Raoulia
- Saxifrage
- Silene
- Uvularia
- Vancouveria
- Viola Aetolica
- Viola biflora
Bulbs
Shrubs
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