Kingdom Plantae

• Harebell
  
• Heart leaved alexanders
  
• Heliotrope
  
• Highbush cranberry
  
• Howell's pussytoes
  
• Island ceanothus
  
• Ivy geranium
  
• Japanese cypress
  
• Japanese Hornbeam
  
• Japanese meadowsweet
  
• Japanese spindle
  
• Japanese tree lilac
  
• Jerusalem artichoke
  
• Joe Pye weed
  
• Junegrass
  
• Juniper
  
• Lace aloe
  
• Large-flowered tickseed
  
• Leiberg's panic grass
  
• Leopard plant
  
• Little bluestem
  
• Littleleaf linden
  
• Long-fruited anemone
  
• Longleaf speedwell
  
• Maximilian sunflower
  
• Meadow Blazing Star
  
• Meadow crane's-bill
  
• Morning glory
  
• Mossy stonecrop
  
• Night sky petunia