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Gardening With Tony

This Parade Needs Some Rain
Posted by Tony Tomeo on Jan 10, 2014 - 8:53:14 AM

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Little mugo pine stays quite small.
UNITED STATES—The lack or rain has really gotten serious! This winter so far has been the driest ever recorded. The past two winters had already been unusually dry. Even when the rain starts, it will be considerably behind schedule. Some seriously torrential rain will be needed to catch up.

 

As much as we like to think of gardening as something that brings us closer to nature, it demands unnatural volumes of water. Only established native plants or plants that are native to similar climates can survive with the limited moisture that they get from rain. This is why gardens get watered as much as they do.

 

Lawns of course require the most water because their shallow root systems require such frequent watering, and also because their vast foliar surface area loses so much moisture to evapotranspiration (evaporation from foliar surfaces). Lawns are the first and most prominent of landscape features to succumb to water restriction. Flowering annuals are the next to succumb, because they too want regular watering, especially while they are not getting any from rain.

 

Fortunately, lawns, annuals and other plants that want an abundance of moisture need less now because they are dormant or considerably less active through winter. Besides, evapotranspiration is inhibited by cooler temperatures, shorter day length, and most of the time, by higher humidity. It is nothing like the warm and arid (minimal humidity) weather during longer days of summer.

 

Many large and established shrubs and trees can survive quite easily with very minimal watering or even none at all. Established oleander, bottlebrush and juniper may not be as vibrant without watering, but should survive. If they notice a lack of water at all, it would not be until they start to grow again in spring. Mature trees take even longer to notice a problem.

 

Deciduous plants that are now bare really do not consume much moisture at all and really only need enough moisture in the ground to keep their roots from desiccating. This will only be a problem if the soil is very sandy and drains too efficiently to retain adequate moisture, or if freshly installed plants have not had enough time to adequately disperse their roots into the surrounding soil.

 

Automated irrigation systems should still be operated only minimally or not at all through winter. However, because of the unusually dry weather, they may need to be used a bit more than usual for this time of year to keep some things from getting too dry.

 

Highlight: Mugo Pine

 

Most shrubs and many perennials get larger than the diminutive mugo pine, Pinus mugo. The most common type grows very slowly as a dense and rounded mound only a few feet tall and maybe twice as wide. Only a very old specimen might reach an eave. The paired dark green needles are about one or two inches long. The symmetrical brown cones are a bit shorter. Mugo pine is also known as Swiss mountain pine and because of a misprint in the eighteenth century, mugho pine. Although native to mountains in Europe, mugo pine is most popular in Japanese gardens and for bonsai. Because it grows so slowly, it can be happy in planters and large pots. In large urns of regularly changed flowering annuals, it can be a nice permanent and evergreen centerpiece.



 

Cliffside Malibu

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Serving Bel Air, Benedict Canyon, Beverly Hills. Brentwood, Laurel Canyon, Los Feliz, Malibu, Pacific Palisades, Melrose, Santa Monica, Sherman Oaks, Studio City, Topanga, Canyon, Westwood & Hollywood Hills.