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Adapting Large Glazed Pots for Container Planting; Photos

15 years ago

This was a whole new project for me this summer , so wanted to share what I learned from it:

We acquired some enormous and very heavy glazed pots this year and decided to use them for lilies in our sunniest location- the driveway entrance to the 'retum. Because our climate necessitates moving glazed pots into a sheltered spot for the winter, we did not want to make these monsters heavier than absolutely necessary. At 24" H with a 26"diameter, the pots had more than enough room for expanding lily and perennial roots, and they already had drainage holes. We decided to fit them with false bottoms. Finding no premade versions that were large enough, we made them ourselves.

First, to allow for water drainage but prevent future soil loss through the drainage holes, we covered the holes with small pieces from broken terra cotta pots. Then we filled our glazed pots about halfway with recycled packing peanuts,leaving 12-15" of vertical space for a thin false bottom and the soil. For the false bottoms, we obtained some of a friend's leftover 1" thick foam insulation boards that were feather light but dense and strong enough to support the weight of the dirt and of the plants.

Because the necks of our pots were smaller than their waists, we had to fineagle a technique to cut the boards into tightly fitting 26" W false bottoms that could still pass through each pot's 20"W neck. We measured the inside of the pot's waist and then cut 2 foam semi-circles (or shapes that combined to make a circle) which slid vertically into the pot and then were positioned horizontally,and pushed together tightly to make a solid surface on top of the foam peanuts(not the water soluble cornstarch peanuts!) To draw and cut the semicircles, we tied each end of a 16"piece of butchers string to a large headed nail and inserted one nail into the flat foam board at its edge. We wound the excess string around the stationary nail head until the string measured 13"(the diameter we needed.)We pushed that nail into the foam, thus keeping the string from unwinding. Then, with firm pressure on the string, we used the nail tip to draw a 13" arc. A small pointed kitchen knife sawed through the foam board with ease and further shaved edges as needed. We made sure that the foam fit snugly so that the soil mass would stay above the false bottom and not filter down freely into the peanuts. After the foam board was laid down,we pierced drainage holes in it by using the closed pointed tips of a pair of scissors, rotated to establish 1/2"W holes. We then filled the pots with a mixture of compost and potting soil and proceeded to plant them!
{{gwi:258267}}From glazed pots



{{gwi:258268}}From glazed pots



{{gwi:258269}}From glazed pots



{{gwi:258270}}From glazed pots

Purple wandering jew; variegated abutilon; Lily Time Out. There are a few perennials- some veronica and corydalis lutea- that you could see earlier in the summer.

{{gwi:258273}}From glazed pots



{{gwi:258275}}From glazed pots

One of the things I'm really pleased with- is that the lily stems, pre and post bloom, are hidden by the abutilon.

Also, the foliage provides interest before the lilies flower and after. The winter plan is to leave the lilies in the pots (remove and pot up everything else and take to conservatory, where they may or may not survive)and move glazed pots to cover on the screen porch.

I bet some of you will have some good ideas for how to improve these pots for next year. Sedona coleus? purple sweet potato vine? or some other shape or color? I think the Touching orientals i had in other pots might look better next year with the abutilon(if it survives.) I appreciate your suggestions.

best,

mindy

www.cottonarboretum.com/

a few other shots, as long as i'm at it:
{{gwi:258276}}From 2010-08-17

Lily Orania, coleus
{{gwi:258277}}From 2010-08-17

Lily Touching

This is the very first time in 23 years of gardening that I have grown 'picture book perfect' lilies. They've always shown LB and other damage. No LBs ever came to these; maybe because i planted them so late (June, from Brent and Becky's sale). What a thrill !


Comments (5)

  • 15 years ago
    last modified: 11 years ago

    super .... very creative in many ways ... plants and engineering ...

    they are not glazed on the inside .... any plan for winter protection of the pot itself from freeze in your zone???

    ken

  • 15 years ago
    last modified: 11 years ago

    Beautiful combinations.

    One trick I've learned with glazed pots that prevent them from cracking during the winter is to actually plant in a large liner pot that sets inside the glazed pot. When freezing temps arrive, you can lift the planted liner pot from the glazed pot and overwinter in a garage, house, etc...As long as the glazed pot is not filled, it will not crack and can be left insitu or overturned for the winter.

  • 15 years ago
    last modified: 11 years ago

    ken, we move them to screeened porch for winter.

    spazzy, you are so lucky if that works for you but you are z. 7; can't you leave out pots w/ soil in them in your winters? Here in z.5 new eng.- all i've leaned says i can't do that, with or without soil in the pots. we have had other empty pots- cement or cement compounds, raised off the ground- crack- even when turned upside down or when covered with a board and a heavy plastic cover.

    any z. 5ers out there who have successfully overwintered glazed pots out in the open?

    thnx much,
    mindy

  • 15 years ago
    last modified: 11 years ago

    here is how i understand it.. but have never practiced it ...

    if not glazed.. INSIDE.. then the pot soaks up water.. which can then freeze and crack the pot in winter.. if the pot freezes ... and the soil inside is expanding ...

    so in my zone.. the pot needs to be empty and dry by winter ...

    so either you remove everything.. or as noted previously... you do pot in pot.. and its easy to empty the clay pot

    perhaps you porch is magical.. or you know by experience .... i only offer warnings toward newbies ... in z6 or colder ....

    ken

  • 15 years ago
    last modified: 11 years ago

    hey.. i finally remembered the terms ...

    fully fired and glazed pots .... turn into ceramic ... like your dinner plates .... impervious to water.. ergo .. much more resistant to exploding in cold zones ....

    adobe.. or clay pots... having never been fired enough [to a high enough temp] .. are like sponges ... absorbing water ....

    ken