Cedar Valley Arboretum. Waterloo http://www.cedarvalleyarboretum.org/
Hartman Reserve. Cedar Falls http://www.co.black-hawk.ia.us/hartman/
Indian Creek Nature Center, Cedar Rapids http://www.indiancreeknaturecenter.org/
Reiman Gardens, Ames http://www.reimangardens.iastate.edu/
Brucemore, Cedar Rapids http://www.brucemore.org/
Dubuque Arboretum and Botanical Center http://www.dubuquearboretum.com/
Bickelhaupt Arboretum, Clinton http://www.bick-arb.org/
Bailey’s Ford Park Nature Center, Manchester http://www.delawarecountyia.com/countyparks001.html
Calkins Nature Center, Iowa Falls http://www.hardincountyconservation.com/index_files/calkinsnaturearea.htm
Mines of Spain E.B. Lyons Nature Center, Dubuque http://www.minesofspain.org/visitorscenter.phtml
Fossil & Prairie Center, Rockford http://www.fossilcenter.com/
Gilberson Conservation Education Area, Elgin http://www.elginiowa.org/GILBERTSON.html
Heery Woods Nature Center, Clarksville http://www.butlercountyiowa.com/wildlifenature.htm
Hurstville Interpretive Center, Maquoketa http://www.jacksonccb.com/HIC.html
Johnson County Conservation Education Center, Tiffin http://www.johnson-county.com/dept_conservation.aspx?id=3943
Jones County Nature Center, Center Junction http://jonescountyiowa.org/environmentraleduction.aspx
Lake Meyer Nature Center, Fort Atkinson http://www.winneshiekcounty.org/winncon/nature_ctr.htm
Mitchell County Nature Center, Osage http://www.osage.net/~mccb/
Osborne Visitor, Welcome and Nature Center, Elkader http://www.claytoncountyconservation.org/Osborne_Welcome_Center.htm
Prairie’s Edge Nature Center, Cresco http://www.iowatelecom.net/~howardccb/Recreation.html#ncenter
South Bluff Nature Center – Bellevue State Park, Bellevue http://www.iowadnr.gov/parks/state_park_list/bellevue.html
Swiss Valley Preserve Center, Peosta http://www.dubuquecounty.org/Conservation/SwissValleyPark/tabid/59/Default.aspx
Tama County Nature Center, Toledo http://www.tamacounty.org/naturecenter.html
University of Iowa MacBride Raptor Project Nature Center, Iowa City http://www.macbrideraptorproject.org/brochure_material.htm
Washington County Conservation Education Center at Marr Park, Ainsworth http://co.washington.ia.us/departments/conservation/conservation_center.htm
Wickiup Hill Outdoor Learning Center, Toddville http://wickiup.blogspot.com/
Wildwood Nature Center, Fayette http://fayettecountyiowa.org/CONSERVATION.html
Iowa Department of Natural Resources http://www.iowadnr.gov/index.html
Distinguishing Ash Trees from Other Common Trees (Michigan State University) http://www.emeraldashborer.info/files/e2892ash.pdf
The Iowa Gardener online “magazine”: http://www.theiowagardener.com/
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This post was written by Eileen Loan on June 9, 2010

I put my Christmas cactus outdoors (east side) for the summer, about a month ago I noticed buds starting to form so I brought it in & placed it by an east patio door. It is in full bloom, what did I do wrong & what do I do now? This plant is about 4yrs. old & has always bloomed before Christmas but never this early.
Bev, if you have had this a long time and this is the first year it has done this, I’ll have to do some digging. If this is the first year you have had it, you may have a variety that blooms at a different time of year. There are Christmas cactus, Thanksgiving cactus, Easter cactus and I found a Spring cactus this year that I gave to my mom. They each have slightly different leaf shape and, obviously, bloom at different times. I suppose you have one of the alternate varieties. If you bought it in bloom at Christmas, it may have been a different type that was forced and now it is behaving as it should. If you haven’t checked it out yet, I have posted something about the cactuses here. And maybe someone else has another answer. Let me know!
I have a Purple Shamrock plant which has been kept inside. I fertile it monthly, and water weekly. The directions state semi-dormant in winter.Apply water again in spring. Do you set this plant in the basement for the winter months? Do you repot in the spring? Any other advice? Thank you.
Shirley, I did some research and came up with some info. I posted it on the latest The Dirt, so you can check there, but it essentially says the purple shamrock only needs about a month in a cool, dark place. Check out the posting for more info. And thanks for the question!
Hi Eileen
I have 7 hibiscus I have trimmed 5 back, come around Feburay leaves turn brown and die. Do you have any suggestions or how to provent this?
Robin, I will do some more looking, but it appears it could be a couple of things. One thing I came across in my reading was that a family living in Zone 4 bring their hibiscus in for the winter and remove cobwebs and leaves and give them a good shower, but in February and March theiy have a lot of leaf drop and small black bumps that cover the stem. This is scale and needs to be treated with horticultural oil. Another problem I came across is wilt that occurs when there isn’t enough water reaching the aerial part of the plant but can also be caused by keeping the soil so wet that the root system can’t get any air. These plants will go into a rest period during the winter and should only be watered to the point of preventing the soil from drying out. I’ll still look for more info and see if any other readers have other suggestions.
should one use differnt fruit tree sprays from year to year
Hi Eileen – I know you are speaking this weekend in Alta Visa (I believe) but where, when and what is the topic? I only caught part of the TV ad. Thanks,
Suzi,
Sorry I didn’t see this message in time. I hope you found out and made it. It sounds like I may be back sometime for the Garden Club and a talk this summer at the Christmas Tree Association Conference. I spoke about some spring cleanup and new perennials and annuals for 2011. I am going to try to post at least some of the talk on the blog.
I have a question for you. About five years ago, I planted 5 flowering crabapple trees. They have all 5 grown nicely each year but I noticed that they bloom less each year. They definitely don’t bloom on our acreage like the ones I see in town. Is there something I should be doing to enhance the blooms?
Hi Eileen,
I know you have said you need to mulch your roses but I am wondering do you need to cut them back too. I have seen people and articles say to cut them back and mulch and other say not too. Some of the branches on my roses are pretty big and I would like to cut them back but again I don’t know how far back and when is the best time. Now or in the spring.
Thanks so much for your help
Anita
Anita,
You should cut the long stems back to around a foot or 18″ by Thanksgiving. You can probably leave them 2 feet long, too. Just tie them together so they don’t whip around too much in the winter winds. If you are going to use one of those styrofoam cones, you will need to trim them short enough to fit under that, but I usually just tie the stems together, put about a foot of new soil around the base of the rose and then cover it with leaves or mulch. The stems that are treated to the harsh winter weather will possibly die, but then you just cut that off in the spring when the new growth starts. When that new growth starts showing up, remove the mulch and as much of the dirt as you can without ripping your hands apart with the thorns. Watering and rain will wash the rest of the mound away, although my mom’s Firefighter rose still has some dirt mounded at the base and it seems to be doing very well. It started producing flowers before mine did!
Good luck!
Eileen
Should u harvest flowers for seed before or after the freeze
Seeds should be harvested when they flowerhead has dried out. It depends on if the plant has matured to that point at the time of the freeze. It can happen beforehand, but you can collect seeds afterwards, too. Whenever you harvest them, make sure they are completely dry before you store them as any amount of moisture will cause them to mold. And label each container you put them in. We have some seeds from a friend of ours who has since died and we have no idea what they are. While I could just throw them in the ground and see if they grow, I don’t know how tall they will get, nor am I sure of their light requirements. So, it is a really good idea to mark them up… even if you think you can remember! Have fun!
I have a Manivilia Plant that is in a pot. My question is will it survive the winter inside or is it safe to go ahead a plant it outside.
Thanks, Jo
I have a Mandavil Plant that is in a pot and was wondering if it will make it inside for the winter or should i go ahead and plant it outdoors? It was started from another plant but is growing good but didn’t know what to do.
Thanks, Jo
Jo, Mandaville is a tropical plant, so it probably won’t survive our winters. I am doing a bit more research and will do a post on this when I get more info.
Hi
I work at the Gold Estate in Waterloo and bought a 6 in Poinsettia plant the day after Christmas and it was very withered and dry. I have transplanted her two times over the year and she is now about 2 feet across and a little above my knees tall. I have had several people stop and make comments about her and they all tell me that I need to tell you about it. She is in full bloom and is just beautiful this year, if you are in the area please stop by and take a look and her our address is 1523 E San Marnan Dr Waterloo. Thanks and have a WONDERFUL Christmas Season.
Thanks, Tricia! I’ll try to swing by one of these days. Poinsettias are native to Southern Mexico and I have seen pictures of ones growing outside in New Mexico that were taller than the house! Your “baby” must be very happy!
I noticed today that my tulips and day lillies are coming up. Will I loose them when it cools down again. This is a plant AND weather question so you are the one to go to!
Cindy,
I noticed my bleeding hearts starting to poke through, too! And one of my mums had green growth on it, but I’m not sure if it is new or just the old stuff that hasn’t completely died off, yet.
Most plants that come up early can take another freeze, especially if they aren’t up too much when the next freeze hits. The tips of the leaves will get burnt and they won’t look that great when the rest of the plant comes up, but the bulb or rhizome should be able to take the hit. If you are concerned about them, or if they are coming up pretty quickly, you can cover them with more mulch or leaves before the next freeze comes. With the overnight temperatures staying below freezing, the plants will probably not be able to grwo too quickly and should be able to be covered again with a little more mulch. We will be pretty cold by the end of next week for at least a few days, if the models hold on to their trend. If we get snow with the cold (say a few inches) this will provide some insulation, which is what the mulch is for. It may also nip the leaf ends, but the overall health of the plant shouldn’t be affected.
I am disgusted with the “creeping charlie” that taken over my front yard. Along with TruGreen Chemlawn and some borox water that I’ve personally used, it continues to thrive, any suggestions on what to do to get rid of it?