So you went to a plant sale or a garden center and came back with more plants than you intended, more plants than you currently have a place prepared. Maybe you need to move something to make space for that new woody plant, and the plant you have to move is still blooming. Or maybe you just have so much to plant that you can't get it all in the ground right away. It's best to get things planted immediately, but if you can't, don't just leave that woody plant in its original container. It's time to pot up.
By moving that woody plant into a larger container, you've bought yourself a couple of months of extra time to get that plant into the ground before it starts to decline. I'll be doing that with some of the woody plants I purchased at the Morton Arboretum sale last week. I know it will work, as I did the same thing with an Oakleaf Hydrangea (Hydrangea quercifolia 'Little Honey') I purchased at the arboretum sale in April 2008. After keeping it well watered all summer, I planted it in September 2008. This is how it looks now.

(It would have looked even better had the deer not munched on it last winter.)
(It would have looked even better had the deer not munched on it last winter.)
This Daphne I received mailorder from Arrowhead Alpines last year was in an appropriately sized container when it arrived and in good condition. I could have planted it immediately, but it was so small, I was afraid it would be dug up by the squirrels, or eaten to nothing by the deer, so I decided to pot it up to bulk it up before planting it in the ground last fall to increase its chances of survival. 
On the right is the original pot, on the left, a pot one size larger.
Here's how it looks today.

I must confess, I kept a wire basket over it all winter to protect it from the deer.
I must confess, I kept a wire basket over it all winter to protect it from the deer.
While I had a good experience with my Daphne, buying woody plants (or any plant for that matter) in a container is the ultimate in caveat emptor (as my old Contracts professor would call it), that handy Latin phrase for buyer beware. We all know enough now to check to see if a plant is potbound. We look for extra roots hanging out of the bottom, or a congested knot of roots on the top. But even a plant that looks good in the pot may not be. This Hosta is a great example. (The Caryopteris below would have been better, but I forgot to take photos before I finished with it.) Looks good right? (Except for the minor frost damage on some of the leaves)

But when I pulled it out, half the soil stayed in the pot, revealing a plant that was recently moved from a small container into this larger one.
But when I pulled it out, half the soil stayed in the pot, revealing a plant that was recently moved from a small container into this larger one.
It appears that the plant was slightly potbound, but instead of untangling the roots, whoever potted this up merely stuffed it into a larger pot. The long roots were circled in on each other. Below is the result after I untangled all the roots and spread them out.
This is why it's a good idea to bareroot all potted plants, woodies, perennials and annuals.
The container in which I bought the Hosta might have been a good size, but with this Caryopteris I just purchased at the sale, the original container was woefully inadequate.

On the right, the original container. On the left, a container sufficient to straighten out the roots and allow them some room to grow, the size of container into which this plant should have been moved. It will now be fine until I can get it into the ground.
On the right, the original container. On the left, a container sufficient to straighten out the roots and allow them some room to grow, the size of container into which this plant should have been moved. It will now be fine until I can get it into the ground.
So here are the three secrets:
- Always bareroot plants from containers
- If you can't plant a woody plant immediately, for whatever reason (no place, plant is too small), pot it up in a larger container
- Choose an appropriately sized container that isn't too big, but allows the roots a bit of growing room (As Cindy of From My Corner of Katy noted, too much room encourages rot.)
Now, who's ready to buy more plants?
16 comments:
Good advice! I will stress the importance of potting up only to the next larger size of container, though. From what I understand, too much room can encourage root rot. I've had better luck potting up since I started paying attention to that. You know I agree about the importance of bare rooting!
I'm ready to buy more plants! Good tips!
Thanks, Cindy, I edited the post to make that clear.
Carol - let's go buy some together in Buffalo!
All good advice! I potted my dwarf Canadian hemlock since it was so small when I bought it, and it seems to be thriving very well in a bigger container.
Really good advice MMD. Some of it, I hadn't thought about. Here plants grow so fast once the heat comes, I just stuff them into the soil.~~Dee
Really good advice, well explained. Now, if you could just give us tips on how to resist the irresistible new-plant siren call...
MMD, I learned several things from your post. Even had an aha! moment. I always wondered why some plants that seemed root boundhadn't grown into the soil left in the pot when I went to transplant it. And I didn't know too big a container encouraged rot.
I am going to 2 plant sales Sat. and since Rose isn't here, I will be buying for both of us. So this was a very timely post for me. Thanks!
I hope to do some plant shoppping this weekend. It looks like you have some nice ones. Good advise too.
I am, I am!!!
An excellent reminder for me since I just made a big run to Antique Rose Emporium earlier this week and some of my beds aren't ready to receive the new plants yet.
I have a plant sale coming up this weekend at Khlems. Usually the plants there haven't been in the pots for more than a couple days so it shouldn't be a problem.
Early tomorrow morning, I need to ruthlessly dig up a bunch of TB iris to contribute to the sale.
Marnie
I should have read this before writing my reply to the previous post. I'm too timid to take that much dirt away from the roots, but I do loosen up the roots before planting. Maybe I'll start being even more rough with them.
I didn't know you could take dirt away from annuals like that. I'm even more careful with them. I did pull out the extra stock plants from my front bed, and replanted them. I started out trying to dig them up, but they were trying to take their partner plants with them, so I ended up pulling them out. I hope they grow, but even if they don't, the ones that are left should do better.
I'm thinking the plants I bought from the sale today haven't been in their pots long, either. They used pretty good sized pots, too.
Ah yes, plant chess. I know it well! I have six woodies, three perennials, and a huge load of ferns all wanting to be planted. I always say yes to a plant and then figure out where it will go later. BTW, love your baby ginko. So sweet!
ROR - I'd like to see the Hemlock when you get it planted.
Beckie - I'm glad you found it helpful.
Sue - be brave, be ruthless! My shrubs have benefitted greatly from barerooting, and it seems to help the annuals too.
Monica - I hadn't heard the term "plant chess" before, but it fits.
I used your information when I planted some new hellebores the other day. The guy from my favorite local greenhouse said last year he doesn't like to sell hellebores because they don't always live long, or something like that. Anyway, we went there on Mother's Day, and lo and behold, they had a couple kinds in gallon containers! I asked if they'd been there the last time I was there, and was told they just got them in a week or so ago.
Sure enough, when I went to plant them, the roots didn't go all the way through the dirt. I broke them up pretty well before planting. It's been raining ever since, and they seem to be happy.
Thanks again, for the timely advice!
This post is full of great advice!
Oh, I recognize that "just potted up" look on that hosta. We have a nursery in the area that does this as a matter of course, taking root bound plants from 3 and 4 inch containers and slapping them basically untouched into gallon pots and then quadrupling the price. The plants from there never do very well, and they insist that this is a necessary practice since they can't compete with the big box stores. They also bewail the fact that there just doesn't seem to be the traffic in customers, and they blame it on their location. The location is the same as the location the previous owners had, and those people were Busy-busy-busy all the time. I think people don't go there any more because their prices are astronomical and then when you buy a plant it doesn't do well, and even dies.
Pity the poor novice gardener who hasn't had the benefit of your excellent advice and falls prey to that kind of nursery.
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