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COMPLETE HOME GARDENER: Chilly spring OK with these three
The secret to less work in the garden is to have more plants. If you really want to simplify and get back to nature, take a tip from Mother Nature herself and refuse to expose naked soil. Nature abhors a vacuum, so any space left between plants will be planted with airborne weed seeds. Fill in with groundcovers, add more shrubs, add spots of color with perennials, annuals or set pots into the garden bed. Spring is sprung and the buying, planting and blooming frenzy has just begun.
Cold- tolerant flowers you can plant this week:
If you just can’t wait until mid-May when our nighttime temperatures warm up, grow these almost frost-tolerant annual plants that are safe to plant into the garden right now. Remember to harden off any plant you bring home from a warm green house by letting it sit outdoors under the protection of a roof or overhang for a few nights. As with any newly planted annual, run outside and cover the young things with an old sheet or newspaper tents if frost is predicted. These three bloomers can handle our cold spring nights but not freezing temperatures.
For some reason this colorful annual, also called “Poor Man’s Orchid,” is hard to find at garden centers but local nurseries know how it can tolerate our cool, April weather and are now offering it to their more knowledgeable customers. The orchid-like blooms come in brilliant combinations of pink, crimson and violet with rich gold veins in the flower petals. All this color makes Schizanthus a spectacular annual for hanging baskets, window boxes and container gardens. If you’ve been impressed with the full and flowery hanging baskets in Victoria, B.C., then you’ve been impressed with Schizanthus. The reason to buy it now is because it loves our cool, damp weather especially when protected by frost and rain by an overhanging roof or when grown close to the house.
The garden gossip on this exotic show-stopper is the length of the show. Schizanthus has a short life span so it is difficult to keep this plant in flower until September. I plant it in April, enjoy it until July and then when the weather finally heats up I just replace these Butterfly Flowers with coleus, zinnias or some other heat-loving annual. Did I mention how much the humming birds love it?
Lobelia: Grow in
shade, sun or part sun
I’ll always have a soft spot in my heart for lobelia as it was one of the first flowers I ever grew from seed as a nerdy 12-year-old. I started the seeds under the light of my fluorescent desk light. Although lobelia seeds are super tiny, they are surprisingly easy to grow.
Look for some intense new colors of lobelia available this spring at local nurseries. Deep purple, lavender, pure white and the ever-popular navy blue lobelia come in compact forms, trailing varieties and edging varieties perfect for bordering a walkway. Like Schizanthus, this annual thrives in our cool spring weather and will take full sun or partial shade. Unlike Schizanthus, lobelia plants can be kept in bloom a full six months if you keep them fertilized and well-watered. I like to use the pure white varieties next to the intense colors of begonias in a window box that gets very little sunlight. The white flowers really light up the shade and put brighter colors in the spotlight.
There are two newer lobelias available this year from Proven Winners. Heavenly Lilac is a deep purple while the more compact Lavender Bush is lighter in color with a more tidy growth habit. Both tolerate full sun and warmer days than previous lobelia varieties making them perfect for mixed baskets that are shaded in the morning but then get blasts of hot afternoon sun.
Lobularia Snow Princess new queen of the
The classic lobularia or Sweet Alyssum is another cool-weather favorite that will reseed and also tolerates hot, dry summer conditions in Western Washington. I let Sweet Alyssum reseed itself each spring in the gravel courtyard of my English style garden; but be warned that although you may purchase Sweet Alyssum in shades of purple, lavender and pink, it reverts back to white when allowed to drop seeds and resprout.
This year there is a much larger, much improved and much better lobularia on the market. It is called Lobularia Snow Princess. An international winner of innovation awards for new plants, this super alyssum from Proven Winners is sterile, which means instead of putting energy into making seeds, it funnels all its growth into flower production. But this ambitious bloomer is no princess when it comes to growth habit. She’ll elbow her way over smaller plants, stealing real estate in pots, baskets and flower beds with an abundance of pure white blooms from April until October. Just one plant filled a large pot on my patio last summer and I never had to deadhead, prune or fuss with the frilly cloud of white flowers. Give Lobularia Snow Princess plenty of room and water and you’ll love this low maintenance plant. It does well in full sun or partial shade and you can plant it outdoors right now as Lobularia is more cold-tolerant that other annuals.