Hi Rose, Usually, the reason an iris in a pot doesn’t bloom is insufficient daylight. The plant needs a minimum of 6 hours of direct Sun every day for a good bloom. Another reason an iris will not bloom is because the rhizome (which looks like a bulb) is planted too deeply. Believe it or not, the top of the rhizome should stick out—and not have any soil on it! Nor mulch. If it’s covered in soil, you’ll get greenery but no flowers. Finally, it always helps to give your iris some nutrients (food!). Top dress with a low nitrogen fertilizer every spring. Do NOT use too much nitrogen or you will inhibit its blooms. We hope this helps!
Hi Rose, Usually, the reason an iris in a pot doesn’t bloom is insufficient daylight. The plant needs a minimum of 6 hours of direct Sun every day for a good bloom. Another reason an iris will not bloom is because the rhizome (which looks like a bulb) is planted too deeply. Believe it or not, the top of the rhizome should stick out—and not have any soil on it! Nor mulch. If it’s covered in soil, you’ll get greenery but no flowers. Finally, it always helps to give your iris some nutrients (food!). Top dress with a low nitrogen fertilizer every spring. Do NOT use too much nitrogen or you will inhibit its blooms. We hope this helps!