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Jul 10, 2020 6:23 AM CST
|My dahlias were put in last year and didn't flower, but it was their first year. This year the same thing has happened - loads of good strong growth but no flowers. From your articles I think it could be over fertilizing (new to gardening and dahlias) having stopped this will they recover and flower or have I ruined them for good.What should I be doing.|
Philadelphia (Zone 7a)
Jul 11, 2020 9:32 AM CST
|They take quite a bit of time to flower if they are the tall/large flower varieties. I'm not sure why one wouldn't get flowers but yes, backing off feeding and giving them a chance to settle isn't a bad idea.
They do best with low nitrogen fertilizers, so something with a low first number, like 5-10-10 or 10-20-20 or 0-10-15. Lots of nitrogen promotes big green growth and few flowers. I feed once a month in July/Aug/early September and that's it.
Photos are always helpful in these types of questions if you get a chance.
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