With the exception of the Luna, Ebro and Siena, our urns are not commonly filled with soil and planted. Consequently, they must be protected from filling with snow and water and freezing. We manufacture concrete
winter lids specifically designed for each urn, matched in both color and finish. However, any waterproof, flat covering which will not blow off is fine.
Planters & Bowls:
If completely filled with firmly tamped soil to within 1 inch or less of the rim, no special care is required for winterization. If the planter is empty it must be treated as an urn (see below). For complete peace of mind with regards to extreme freeze-thaw weather cycles, we recommend the planter opening be covered with a lid. Lunaform planters are routinely surviving the harshest northern winter climates without lids, provided that they are completely filled with soil (and stay filled). However, a simple lid will protect your investment for generations.
No winterization care is required. May be allowed to fill and freeze.
**DO NOT FILL THE BOTTOM OF ANY PLANTER OR PLANTED URN WITH MORE THAN 1 INCH OF STYROFOAM PEANUTS OR GRAVELTO SAVE ON SOIL. THIS CAN CAUSE SURFACE DISCOLORATION OR (IN A FREEZING CLIMATE) STRUCTURAL DAMAGE.
Note: The exterior surfaces of our concrete pots require no winterization care or specific maintenance.
Moss or mold can develop over time and, if not desired, can be removed with an Algaecide or a weak bleach solution. Unlike terra cotta (clay) and some cast concrete (often called cast stone) pieces, Because of the inherent nature of concrete, superficial hairline surface (shrink) cracks do occur in some instances and are considered normal and acceptable. These should not be confused with structural damage or defect. Salt deposits, or efflorescence, can occasionally develop as they do in terra-cotta pieces because of the presence of calcium salts in the soil and in the concrete itself. While many clients prefer the aged appearance of this natural occurrence, these salt deposits can be easily removed.