Astilbe help requested - Warning lots of info to read...
Hello all, I was wondering if anyone could help me with my astilbe problem. I have 8 plants total. All where given to me as a gift and purchased from the same mail order company (I believe Brecks). 2 White, 2 peach, 2 red and 2 purple. Here is the problem:
The peach and purple are not. They come up every year with fresh new stalks and leaves looking promising and then both bloom a rust color.
The White and Red do bloom in their color but only stay that way for a few weeks. After about 1 month they all have turned a dark brown dead looking color. What am I doing wrong? They are in mostly shade, as they only get about 2/3 hours of morning sun a day. I have had them all for about 5 years now, and I have tried each year something different but get the same results.
The first year I gave them enough water to keep the ground moist but not soggy.
The second year I gave them lots more water thinking I didn't give them enough the 1st year (Same results).
The third year I gave them less water thinking - ok well then they must have to much water(same results again).
The 4th year I went with more water and fertilizer (and again the same results).
Last year I did less water and fertilizer but still yet once again faced the same ugly brown dead looking plants after just one month.
And the Purple and Peach have never bloomed with color no matter what I tried.
As I said they were a gift (from my little 7 year old god daughter whom lovingly picked them out at age 2) so if I can I would like to grow them. So any suggestions? Am I doing something wrong, or should I just dig up these specific plants and acquire new ones to discretely replace them? My concern is if I am doing something wrong I will most likely cause the same results with the new plants too.