potato plants
- By George Bonnema, Luverne HorticulturalistJune 11, 2019If you followed my advice for using systemic rose care for your shrub roses when I first wrote about it this year, the product should be reapplied three times per season at six-week intervals, and this is six weeks after that initial application, so give them another treatment. Most roses are at their most vigorous growth period right now, so they will reward you later with more and bigger blooms…
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