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large raised cement planter help

Zone 8b
PNW

We have a large raised cement planter that I hate. It doesn’t have easy access to water, is hard to get to in terms of planting and managing, and I cannot keep anything alive in it!

Since moving in three years ago I’ve replaced the soil twice in case that was the problem.

I’ve tried mock orange, pachysandra, rhododendron, Heather. None seem to manage.

The current Heather I didn’t want to lose so I watered every few days and tried to really pay attention to. We did just have a terrible heat wave here but the Heather is the only plan that appears to be dying. Everyone else is managing in the other gardens

I either need new plant ideas that are stronger or to completely rethink how to use the planter.

If possible I would like to spend $250 or less on this overall.

Does anyone have ideas on what I can do with this eye sore.

Comments (47)

  • 5 years ago

    A friend just recommended lavender as a good option but I’m not sure

  • 5 years ago

    What is the sun exposure and is it under the eaves of the house?

  • 5 years ago

    Half under eaves of house. Faces east.

  • 5 years ago

    Succulents are very forgiving of not being watered all the time and will handle the reflected heat better than the other plants you listed.

  • 5 years ago

    They won’t survive the rainy fall/winter/spring though from my experience. The area will still get wet from rain

  • 5 years ago

    You have half day sun in a dry, hard to access bed on what may be the leeward side of the house. I think you need to go more xeric too. A sculptural succulent with a gravel mulch could look good, The plant needs to be cold hardy to zone 8. Possibly prostrate rosemary could work as a draping groundcover. Some PNW plant people need to make suggestions.

  • 5 years ago

    What does leeward side of the house mean?

  • 5 years ago

    The dry side, opposite of the prevailing wind of the windward or wet side of the island. One succulent type plant that will work for you is Yucca filamentosa 'Color Guard' or 'Bright Edge'.

  • 5 years ago

    Id do a dwarf boxwood. they are evergreen.

  • 5 years ago
    last modified: 5 years ago

    Boxwood is boring and not xeric.

  • 5 years ago

    A jackhammer? Why is this there and must it stay?

  • 5 years ago

    The yucca is an excellent suggestion!! Facing east means morning sun only, although the location looks bright. Not an idea situation for lavender but yucca will grow in just about any exposure. I might also include an underplanting of something like sedum 'Angelina' to really pop up the color impact. Both the yucca and sedum are fully hardy here in the PNW and after some initial watering to get established, can pretty much be ignored.

  • 5 years ago

    Why don’t you just remove the planter if you hate it?

  • 5 years ago

    mint...any kind of mint will take over lol

  • 5 years ago

    I would no plant any thing that spreads. Though it looks like it can be watered from above, I'd hestate to add roots and water here. How about large colorful potted shrub, or statuary.

  • 5 years ago
    last modified: 5 years ago

    What are the green leaves which seem to be growing healthily in there?


    ps. I’ve failed to establish mint many times.

  • 5 years ago

    Can you post a picture of the planter from further back? What else is around the planter? (Looks like this might be a back patio?)

  • 5 years ago
    last modified: 5 years ago

    You've tried quite a bit. The concrete may be leaching something into the dirt that isn't doing the plants any good.


    Remove plants, top off the dirt with a few inches of gravel. Add some interesting specimen rocks, geodes, and petrified wood. Or add an outdoor sculpture. Or an inexpensive "starter bonsai" in an interesting pot to see how it does.

  • PRO
    5 years ago

    I think I need to see it from furtehr back to understand how this space relates to the house . Why the planter at all in that space . IMO without context there can be no answers .

  • 5 years ago

    Try a manzanita, https://xeraplants.com/arctostaphylos/ browse some part sun varieties Arctostaphylos densiflora ‘Type Form’ and Arctostaphylos edmundsii ‘Big Sur’

  • PRO
    5 years ago

    More photos from further back, regardless you need to add some sort of irrigation- a drip system can be cheap and unobtrusive.

  • 5 years ago

    This is the back of our house and you can see the planter there on the right side of the deck. It is not possible to remove this giant thing that is attached to our house. I need to live with it and find something that will live in it. There is also no water on this side of the house. The water access is up on the garden on the top right. So there is no easy way to add a drip hose as there is no spot for it to be connected. It’s an oversight on our part that the planter is there. We did not catch it on the drawings.

    Thank you for the ideas thus far. I’m going to look them up!

  • 5 years ago

    Floral I don’t know what the green is! It pops up each year then dies.

  • 5 years ago

    maybe you can turn it into a water feature? liner, fill with water and pump...maybe have it cascade down the sides into something.

  • 5 years ago

    Yucca and Sedum Angelina look lovely and hearty!

    Will Yucca be okay in PNW rain in fall?

  • 5 years ago

    Yes :-) PNW rain is generally greatly exaggerated to begin with so as long as the planter drains (no puddling of water in winter?), the yucca will be fine. Yuccas are planted all over the place here. And the variegated ones like Color Guard or Bright Edge grow more slowly and stay smaller than the solid green types.

  • 5 years ago

    Great thanks!!! There is no puddling in the planter.

  • 5 years ago

    Does anyone have thoughts on heavenly bamboo as an option?

  • 5 years ago

    That could work as well as long as you pick a cultivar that is size appropriate. But the nandina will not be as drought tolerant as the yucca and sedums. You won't be able to rely just on rainfall.

  • 5 years ago

    Thanks! I’m going to head out to one of the farther out valley nurseries next week and see what I can find! Feeling more hopeful now.

  • 5 years ago

    Your house could definitely have a leeward - dry side - rain shadow in that planter. Without easy water access you have to think xeric. The yucca and sedum Angelina combo would be quite lovely. You have room for at least three yucca.

  • 5 years ago

    Only 1/3 of the planter gets wet in rain

  • 5 years ago

    You should still do a decorative gravel mulch. The Angelina sedum will grow in and on top of it fine. It is also easy to pull to expose more or less gravel as a third contrasting element of the planting composition.

  • 5 years ago

    How thick does the gravel need to be? Trying to think how much I’ll need.

  • 5 years ago

    3/4 to 1 inch layer on top of soil is fine. No landscape fabric!!!!!!

  • 5 years ago

    Plants acquired and I’m going to also add some hens and chicks that I have all over another area. I think I need to add more soil first though and then try and source some nice rocks. This is what it looks like with dead gone. Soil should be higher?

  • 5 years ago

    I see you decided to try planting again. :-) If they don’t “take” this time, what about considering some type of sculpture? You can fill in around with weed barrier topped with river rock/stones.

  • 5 years ago

    Get er done. I'm impressed. It looks perfect. The dirt is covered. That is plenty gravel and the finished level below the edge of the cement is good. Yes, the sedum can grow over the curb if it is happy there. It can cover the gravel solid. In time.

    Xeric does not mean no water, especially in your dry leeward side bed. Give the plantings a drink every now and again.

    How did it work out with your budget?

  • 5 years ago

    Plants came to $110

    Three bags of new soil was $22

    River rocks was 1/4 yard. I had to shovel it in myself but only $26

    So all in not bad and under what I was willing to pay. I just hope I can keep it alive!

  • 5 years ago

    The changes look good. Please post an update in a few months or so.

  • 5 years ago

    And did you know, Yucca filamentosa grows, a beautiful flower stem every so often?



  • 5 years ago

    Yes! We actually have quite a few in our neighbourhood. They are lovely

  • 5 years ago

    I am late to the party but something you can add for watering is an OLLA ( Ola sp?} which is basically a large clay jar or plastic bottle with tiny holes to bury near plants for slow drip watering I use recycled soda bottles in my patio pots. Fill with water and keep bottle capped to avoid mosquitos. this will keep plants watered for a few days depending on the heat. You can glue together small clay pots and use a saucer for lid or just a clay one. Your big planter might take two,

    Pebble mulch is great to keep in moisture and keep rain or watering from splashing mud or up rooting plants. so i hope this helps your new plants thrive.

  • 5 years ago

    Well here we are almost two months later. It’s still mostly good but the yucca don’t seem super happy. I’ve cut away dead dry bits. I water less than once a week. Do I need to do more/less?

  • 5 years ago
    last modified: 5 years ago

    You added a cordyline? Sedum Angelina and the yucca have grown. Yucca does an annual growth flush of new leaves. In summer for me. Then no new leaves until next year.

    No need to cut off the dry bits. Looks fine. Water amount will depend on rain and soil moisture. Look under the gravel and adjust your watering if needed, but a good watering once a week sounds fine.

  • 5 years ago

    Yes it was in a pot in another spot and it’s buddy died so I needed a new spot for it. Seems content for now.