Snowdrops

first half of March to beginning of April

Crocuses

first half of March to beginning of April

Spring flowers        

beginning of March to beginning of May (pansies, daisies, forget-me-nots, wallflowers etc.)

Narcissi

mid March to mid April

Orchids

Orchid Show in the Palm House from the start of the flower season to beginning of May

Tulips

beginning of April to beginning of May

Rhododendrons            

beginning to end of May

Peonies

beginning to end of May

Summer flowers and
tub plants

mid May to mid October (a huge range of bedding plants, solitary plants in beds or tubs-indigenous, exotic, colourful)  

Roses- Wild and Bush Rose Promenade

mid May to mid June, Repeat flowerers into October

Roses- Italian Rose Garden

Main bloom up to voting for the Mainau Queen of Roses, mid June to mid July, 2nd bloom - mid to end of August, Partial bloom up to October

Hydrangeas

mid July to beginning of August

Hibiscus

end of July to end of August

Dahlias

start of the Dahlia Show up to voting for the Mainau Queen of Dahlias, end of August/beginning of September up to the first frosts