Espoma Iron-tone "Tropicals" the Husker Red Penstemon is

the Husker Red Penstemon is an essential native plant for any cottage garden

Additionally

Miss Molly Butterfly Bush or Buddleia 'Miss Molly' have huge magenta spike flowers that are produced in abundance with the first flush followed by 8-10″ blooms thereafter from mid-summer to fall

Under the right circumstances

Espoma Iron-tone "Tropicals" the Husker Red Penstemon isEspoma Iron Tone for Sale Online Espoma Organic Iron Tone Plant Supplement is for use on lawns, flowers, vegetables, evergreen & ornamental shrubs, berries, citrus, shade, ornamental & fruit trees. Use in the early Spring, or any time during the growing season where iron chlorosis (yellow leaves) exists. Organic fertilizer & Iron supplement Fast acting iron supplement Turns yellow to green naturally Will not stain concrete surfaces