I ordered about 5 different bulbs last spring. A trillium root, that was extremely small (I believe they are supposed to be, but it was so small I was concerned) sanguinaria, a ginger plant, a black dragon lily and 2 apricot fudge day lilies. Everything came up, but the sanguinaria. It was planted in a good location and cared for, but the plant never emerged from the bulb. The ginger was a decent live plant, that burned badly even in mostly shade. I wonder if it is grown under shade cloth, I've never seen anything burn that badly in just a few hours filtered sun per day. I finally planted it in total shade, and though it completely died at the top it did resprout, and is small but growing. The black dragon lily grew to about 3 feet, about half what it is supposed to be for height, and looks like it will not bloom this year. It is in full sun, decent soil, and I'm not sure why it is doing so poorly. The apricot fudge lilies did fine, no complaints at all.
I did email the company about the sanguinaria, which while much less expensive than other vendors - must have been a dead bulb as it did nothing. I had my doubts when I planted it as it was as small as the trillium. I never heard back. Some of the plants did ok, but I think I would be hesitant to order again given the lack of response / poor performance of 2 items.

When we moved to this home, we received all manner of garden catalogues. After viewing the pollinator-attraction of the local Botanic Garden's eremurus, I wanted some. Got a bag of 4 from a local hardware-store garden center, and they come up every year like billy-oh. I loved the possibilities in the McC&Z, so ordered many eremurus to attract pollinators to our little back yard 'wild' area. The goods arrived, and of the dozen or so in the plastic bag, some were very very moldy. (Since this company does not provide instructions for its eremurus, I planted them according to instructions that came with a hardware-store package of eremurus which I'd planted the season before.) I planted the lot, & waited 2 years for any of them to come up, thinking perhaps this group needed to acclimate or something...
Then made an inquiry to their c/s that there was nothing in sight, do they need so much time? & was told 'oh, sorry too late -you should have told us a year ago. Nothing we can do.' I complained that if it was my company, I'd want to know what was going on at all, and hey I was giving the eremurus a chance to prove itself by being patient with them, sorry to bother you, but out of twelve there should have been at least one to thrive in our well-nourished yard. After this, someone got back to me with an apology, promised to send out replacement ones. Therefore, in fall, last year, I received a package of 6. Planted again according to the hardware-store instructions.
Nothing this year. Not a sign.
So - I would give them a zero/negative for failure-to-thrive product, and neutral for c/s making sure I got partial replacement but not making sure they were viable.

I ordered 24 'jumbo Starburst caladium bulbs,' status (per MZ website): "In Stock." I got 24 'substituted' Sweetheart bulbs, definitely NOT jumbo-sized, more like a mix of #1 and #2 sizes. The company never inquired as to whether I was okay with the sub (I'm not, would never have gone ahead with the order had I known the Starburst weren't available); and MZ certainly does seem to have over-estimated the grade/size of their bulbs. I believe I have overpaid for the grade I received.

Buyer beware, though these bulbs are healthy, I'm not going to be ordering from MZ in the future, since this all seems a little bit sneaky, to me.

I had a mixed experience last Fall. 24 each of Cyclamen Cilicium, Cyclamen Coum, and Cyclamen Neapolitanum. I thought at the time, some of the nicest cyclamen corms that I'd ever seen. These are blooming now (or sending up leaves for the C. Coum) and are strong plants with good yield. I also ordered 50 or 60 each of Eranthis Cilicica, Erythronium Dens-Canis Mixture,and Corydalis Solida. These were very poor quality bulbs, mostly dried out, and no more than 10% came up.

Impressive selection, good quality bulbs. Have been a customer since 2007 and have never been disappointed.

Note from the Garden Watchdog editors:

Sorry, but no matter how wonderful their bulbs might be, I have not had nor will I have the chance to find out. I looked forward to some Gloriosa lilies, dahlias, and some other bulbs, but will not have time to plant them now and have them come up. It is April and my dahlias should have been planted here in CA at least a month ago. I will not order from people too lazy to to even say what their company hours are on the telephone, either. Instead, they tell you to check their website.

I am cancelling my order.

"

We are sorry you are dissatisfied with our services. Our phone number and hours are on page 3 of our catalog and under the customer service tab of the website.
Our shipping schedule information is located on the back of the order form and also under the customer service tab on the website. We can not ship bulbs or plant material when the temperatures are freezing, therefore our shipping can not start before mid-March, weather permitting. This year weather conditions in WI were extremely harsh, making shipping difficult.
If you would contact me with your name and zip code I will cancel your order, or call us at 1-800-883-6998 between the hours of 8:00 am to 4:30 pm CST or email us at info@mzbulb.com. Which ever is the most convenient for you."