Oakville Horticultural Society Flower Shows

June 2026 Show Schedule

Horticulture

6. Allium, over 3″ in diameter – 1 stem
7. Annual, small, growing height 15″ or under – 3 stems, same cultivar
8. Annual, large, growing height over 15″ – 1 stem
9. Annuals, collection of, 3 kinds – 1 stem of each
10. Aquilegia (columbine) – 1 stem
11. Branch, flowering shrub – 1 branch cut to 30″ or less
12. Clematis – 1 branch in bloom cut to 18″ or less or 1 bloom
13. Foliage, mixed, basket of, under 12″ in any direction
14. Heuchera, Tiarella or Heucherella (coral bells, foam flower, foamy bells) – 3 leaves, same cultivar
15. Hosta, green and white – 3 leaves, same cultivar
16. Hosta, other variegated – 3 leaves, same cultivar
17. Hosta, one solid colour – 3 leaves, same cultivar
18. Hosta dwarf or micro-mini – 3 leaves, same cultivar
19. Iris, bearded – 1 scape
20. Iris, Siberian – 3 scapes, same cultivar
21. Paeonia (peony), herbaceous, – any colour 1 bloom, disbudded
22. Paeonia (peony), Japanese or tree – 1 bloom, disbudded
23. Perennial, small, growing height 15″ or under – 3 stems, same cultivar
24. Perennial, large, growing height over 15″ – 1 stem
25. Perennial, collection of – 3 kinds, 1 stem of each
26. Rosa (rose), hybrid tea – 1 specimen bloom, disbudded (disbudded definition in glossary)
27. Rosa (cluster rose), floribunda, grandiflora, or polyantha rose – 1 specimen bloom, disbudded, or 1 spray (spray definition in glossary)
28. Rosa (rose), shrub – 1 specimen bloom, disbudded, or 1 spray
29. Rosa (rose) miniature/miniflora – 1 specimen bloom, disbudded
30. Rosa (rose) miniature/miniflora – 1 spray
31. Rosa (rose), other – 1 specimen bloom, disbudded, or 1 spray
32. Any other cultivar not listed above (AOC)³ – 1 specimen bloom, disbudded, or 1 spray

Oakville Horticultural Society Flower Shows

Horticulture Guidelines

• Exhibitors are allowed three entries in each class, provided each specimen is a different cultivar/variety/species.
• All entries must be grown by the exhibitor.
• Specimens must be shown with their own attached foliage only.
• Where three specimens of the same cultivar are asked for, the specimens should be uniform, free of disease or insect damage and at a similar stage of maturity.
• Where a definite number of specimens is specified that number must be adhered to.
• Buds showing colour are considered blooms.
• When a height limit is specified for an annual or perennial, this refers to the growing height of the plant, not the cut length of the specimen.
• Houseplants must have been in the possession of the exhibitor for at least three months prior to the show and must not be shown more than once in any six-month period.
• Potted plants may have only one cultivar per pot unless stated otherwise.
• Plants should be clean and well-groomed. Insect-infested or diseased entries will be removed from the show.