Anemone blanda (early)

Allium (late)

Camassia (mid)

Chionodoxa (early)

Crocus tommasinianus

Erythronium (early)

Fritillaria (early)

Hyacinthoides non-scripta (mid)

Ipheion (early)

Iris Hollandica (late)

Iris lazica (early)

Iris orchioides (early)

Iris reticulata (early)

Muscari (early)

Narcissus (early - late)

Ornithogalum (mid)

Puschkinia (early)

Scilla (late)

Tulipa (mid)

Akebia (mid)

Clematis alpina (early)

Clematis armandii (early)

Clematis Early Sensation (early)

Clematis montana (mid)

Clematis x cartmanii (mid)

Holboellia latifolia (early)

Jasminum polyanthum (early)

Wisteria (late)

Ajuga (mid)

Alstroemeria (late)

Aquilegia (late)

Amsonia (mid)

Angelica archangelica (late)

Anthemis (mid)

Anthriscus (mid)

Arabis (late)

Armeria (mid)

Astrantia (late)

Aubrieta (mid)

Bellis perennis (mid)

Bergenia (mid)

Brunnera (early)

Centaurea (late)

Centranthus (late)

Convallaria majalis (mid)

Corydalis (early)

Crambe (mid)

Dianthus (late)

Dicentra (mid)

Dodecatheon (mid)

Doronicum (early)

Epimedium (mid)

Erica (early)

Erigeron (late)

Erodium (late)

Erysimum (early)

Euphorbia (early - late)

Fritillaria imperialis (mid)

Gallium (mid)

Geranium phaeum (late)

Geum (mid)

Gypsophila (mid)

Hesperis matronalis (late)

Hosta (foliage late)

Iberis (early)

Lamprocapnos (mid)

Lathyrus vernus (early)

Myosotis sylvatica (mid)

Oenothera (late)

Omphalodes (early)

Paeonia (late)

Polemonium (late)

Polygonatum (mid)

Pulmonaria (early)

Pulsatilla vulgaris (early)

Primula (early-late)

Smyrnium (Biennial) (Mid)

Saxifraga (alpine varieties - mid)

Tiarella (late)

Trillium (early)

Vinca (mid)

Viola odorata (early)

Amelanchier (early)

Andromeda (mid)

Aronia (mid)

Berberis (mid)

Calycanthus (mid)

Camellia (early)

Ceanothus (mid)

Cercis (mid)

Chaenomeles (early)

Choisya (mid)

Cornus florida (mid)

Cornus canadensis (mid)

Corylopsis (early)

Corylus avellana (mid)

Cytisus (mid)

Daphne (early)

Deutzia (mid)

Diosma (late)

Enkianthus (late)

Exochorda (mid)

Forsythia (early)

Fothergilla (mid)

Hebe (mid)

Indigofera (late)

Leptospermum (late)

Loropetalum (early)

Magnolia (early)

Mahonia (early)

Malus (early)

Olearia (early)

Osmanthus Perfume of Nature (mid)

Osmanthus x burkwoodii (mid)

Philadelphus (late)

Prunus (early)

Pyrus (early)

Rhododendron (early-mid)

Ribes (early)

Rubus Beneden (late)

Salix (early)

Skimmia (early)

Spiraea (mid)

Syringa (mid)

Tamarix (late)

Teucrium (late)

Viburnum (early - late)