2
votes
1answer
22 views

When should Bee Balm bloom in Zone 6 (it did not bloom last year)?

Two years ago we planted some bee balm. We trimmed it back in early March last year and it never bloomed, though the plant was otherwise healthy and bushy. We trimmed it back again this year. Is ...
1
vote
1answer
108 views

What tulips are best for perenniallizing in a clay-base soil?

I have tried several times to plant tulips and have mixed results. They all do well the first year, but after that some varieties consistently die and others thrive and spread. After a little ...
3
votes
1answer
175 views

What flowers and shrubs will grow without outside help?

I would like to plant some shrubs and/or flowers in a mostly wooded area behind my house (in NE Oklahoma). What are some good candidates that are (1) cheap, (2) perennial, and (3) hardy enough to ...
4
votes
1answer
302 views

What is this plant, which has a spreading root system and purple, crinkled petunia-like flowers?

Click to enlarge This is a hardy perennial that grows up to 5' tall. It has a spreading root system and purple, crinkled petunia-like flowers. What is it?