Sunflowers should be planted outdoors and not started indoors. The ones you started indoors will probably never reach their full height, especially if they are blooming now. There is no definite growth rate for any flower only an approximate one. Growth rate depends on weather heat and water. On sunflowers the flowers usually set when it has reached it's full growth.

I think ottawavalleygardener got it, looks like a Rudbeckia laciniata...thanks all for the help. I have some pics of it, but the site rejects them saying they are larger than 60 kilobytes and I don't know how to change the size, can anyone walk me thru that? I have some other plants I'd like help with. I like this forum, interesting and you can learn a lot from all you great people!

According to the Oikos website about the Timburr Chestnut Hybrid, they begin producing in 3-8 years. So yours seems right on track. Congrats! "Timburr Chestnut  Castanea x dentata hybrid Tall Straight Timber Growth Habit like the American Chestnut This is our most American-like hybrid cross producing vigorous seedlings with a dominant central leader. Seedlings show high heritability of upright growth with good resistance to chestnut blight within the majority of the seedlings. Created by using Douglass 2nd and 3rd generation trees along with other hybrid Chinese and European trees that show good form with little or no blight. The seedlings we grow are from the best seven trees that were selected over 20 years ago. Vigorous growth and upright habit were the priority. Seedlings begin producing in 3-8 years. Yields will vary from 20-50 lbs. per tree. We are using seedlings from this group to replace other less vigorous selections on our farm as a way to upgrade our orchard using open pollinated hybrids that may prove completely immune to chestnut blight. Height to 60-80 ft. " Here is a link that might be useful: Oikos Website

I do love your Fantastic! Beautiful plants. Since you have a contained space in the planter, it shouldn't be too difficult to move your agave. I have no idea how the roots, pups will be intertwined with your other plants. But with patience I think you can do it. (You must already have patience with wee ones at home, huh?) I bought my agave at the plant show/sale at Rotary Park - probably in March? It had 8 pups in the pot and was 5 bucks! After I unpotted it, I removed the pups. Maybe I'm a wimp, but twisting them off like the guy told me was too difficult. I couldn't get any to twist off, so I used my handy sharp knife to remove them. Some had roots and a couple did not. All survived. If I were you, I'd remove the pups when you decide to move the agave. I should point out that the K. luciae will pup without flowering. It can make a nice mat of plants for you. But once it decides to bloom, even cutting off the flowers won't stop the plant's eventual decline. So you should enjoy the flowers. You will get a lot more plants to enjoy in the end. I planted 4 on an island out front. I got some pups, filling in the area, and then this year 3 decided to bloom. I will try to take a picture tomorrow. This link has some pictures of what I am trying to describe. Here is a link that might be useful: Propagation