Flag Pole Garden - Knowledgebase Question

Carbondale, Pe
Question by Klaurynas
April 27, 2010
I have a square garden with flag pole in center. This is in full sun. I want flowers all summer and do not know which kind to buy, i.e. annual or perennial and what will give flowers into the Fall. Can you help?


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Answer from NGA
April 27, 2010

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Perennials will give you more bang for your buck because they will come back year after year. Since perennials have a specific bloom time, you'll want to include a mixture so you'll always have something blooming during the growing season. Here are a few suggestions: Centranthus (Red Valerian) Bloom Span: 3-4 Months; Centranthus prefers dry, lean soil, but it blooms longer in cooler climates. In intense heat it will bloom in spring and again as it feels up to it, throughout the summer.

Coreopsis (Tickseed) Bloom Span: 3+ Months; Coreopsis are undemanding plants, but short lived. Either allow them to self-seed or divide the plants every 2-3 years and replant the newer, outer sections. Once the initial buds have completed blooming, sheer the plants back by 1/3 to encourage new flower buds.

Corydalis lutea (Fumewort) Bloom Span: 4 Months ; Corydalis' ferny foliage and delicate flowers belie its fortitude. This is a plant that prefers partial shade and well drained soil and will find a home in cracks in rocks, on slopes in woodlands and along paths. Once established, Corydalis self sows wherever it can.

Dianthus (Pinks) Bloom Span: 2+ Months; While most Dianthus have a long natural period of bloom, many will rebloom with some deadheading. Several varieties are also evergreen and make nice edging plants. Dianthus does well in any well-drained soil, though it prefers a slight alkalinity.

Echinacea purpurea (Coneflower) Bloom Span: 2-3 Months; Having a long bloom period is just on of Echinacea's many attributes. Coneflowers are extremely drought tolerant, attract birds and butterflies and the intense color adds punch to any garden. The tall stalks are self-supporting, unless they've received so much water they become floppy. They require good drainage and full sun. Deadheading will prolong the bloom period.

Gaillardia (Blanket Flower) Bloom Span: 3-4 Months; Gaillardia's yellow petals around a burgundy center are impossible to ignore in a garden. All they ask is full sun and they will keep on blooming all summer. Too mush shade and the stems begin to flop. In most cases, deadheading is not necessary for continual bloom, but it can make the plants look tidier.

Kniphofia (Red Hot Poker) Bloom Span: 3+ Months; The spiky, bottle-brush flowers of Kniphofia are beacons for hummingbirds. Although they look like tough customers, Kniphofia actually requires a bit of winter protection in cooler zones. They are also a bit fussy about liking moist conditions in the summer, but well-drained soil for the winter months. Full sun is generally necessary for ample blooms. 'Primrose Beauty' is especially hardy.

Liatris (Gayfeather, Blazing Star) Bloom Span: 3 Months; Liatris are easy to grow and texturally unusual. The thin, spiky leaves jut off the stems all the way to where the rosy-purple flower spikes begin. Unlike most spiky flowers, Liatris blooms from the top down. Liatris can handle just about any type of soil, but the richer the soil, the more likely they'll need staking. They'll grow in full sun or partial shade. Liatris is long lived and doesn't often require division.

Nepeta (Catmint) Bloom Span: 2-3 Months; Most people think of Nepeta as catnip (Nepeta cataria), a somewhat weedy garden plant. But there are many excellent ornamental Nepetas that will bloom throughout the summer, if deadheaded. Most have some shade of blue-lavender flowers and gray foliage. They are very drought tolerant and make a nice substitute for lavender, in areas where lavender won't thrive.

Rudbeckia (Black-eyed Susan) Bloom Span: 3 Months; Rudbeckia are at home everywhere and many are native to various parts of North America. They prefers well-drained, somewhat lean soil and full sun. Deadheading will prolong bloom and cut Rudbeckia flowers will last a long time in water. With their flat landing pad petals, they are attractive to butterflies and the seeds will be eaten by the birds during the winter.

Scabiosa (Pin Cushion Flower) Bloom Span: 3+ Months; Scabiosa is a unique looking plants with a low growing rosette of narrow leaves and a profusion of gangly stems topped by pincushion flowers. They are relatively easily grown in average soil and full sun. Deadheading is a must for long bloom and general appearance.

Sedum (Stonecrop) Bloom Span: 2-3 Months; The taller sedums are unparalleled garden performers.

Hope these suggestions are helpful.

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