Hydrangeas are a wonderful plant that can give a garden a lot of color. The hydrangea originated out of Japan and was discovered there and brought back to the western world during the mid 18^th century. There are five main species but one is more common then the rest, hydrangea macrophylla. They like to be in a part sun/shade area of the garden. Hydrangeas are a flowering shrub, which flowers through the spring, summer, and into the autumn. The color of the flower is dependent on the type of soil. Soil rich in alkaline will produce pink flowers and acidic soil will produce blue flowers. The common species that most gardens contain is hydrangea macrophylla. The common name is Bigleaf of French hydrangea. There also other types of hydrangeas found in gardens: hydrangea quercifolia (Oakleaf), hydrangea arborescens (Smooth or Annabelle), hydrangea paniculata (Grandiflora or Peegee), and hydrangea anomola petiolaris (Climbing hydrangea).

Flowers

Out of all the species of hydrangeas the three common colors of flowers are: white, pink, and blue. They do come in lavender, or lilac color, a deep red/brown, and a light green. The flower blossom is a collection of small flowers about a quarter in size that bloom in a cluster. They can have three basic shapes to the clusters: mophead which is round and shaped like a sphere, lacecap which is more of a flat shape with blossoms blooming around the edge, and panicle which has more of a cone shape to the flower. They make great cut flowers and can last up to a week in a vase. As you cut the flower stems the hydrangea will produce flowers. Make sure you prune those stems back to ensure that the shrub blooms again.

Gardening Tips

Hydrangeas like to be in a partial sun and shade area of the garden. They do not like the heat of the afternoon and like to be protected by the shade. They love water so be prepared to keep them wet. The flowering season is from the spring to the autumn and need to be pruned back in the autumn. If you want for flowers to bloom you should prune the stems to be about 6-12” from the ground. In the in the early spring add compost and humus to the soil and the type of fertilizer you want to determine the color of the flower. I have some of my hydrangeas next to azaleas and rhododendrons which like acidic soil. This gives the flower a blue color. The color is determined by the amount of aluminum that is in the soil. You can apply aluminum sulfate in the spring and keep the pH around 5 and 5.5. For the beautiful pink flowers you want a more alkaline soil mixture so liming the soil will change the pH to 6 and give you the pink color.

Hydrangeas can grow up to 6 feet high and wide; they are bushy and have woody stems. As the new grow emerges stake the stems of the flowers and needed otherwise let them grow and enjoy. As the seasons progress keep the hydrangea well fertilized with a general fertilizer 10 10 10. You must always water after applying fertilizer so that it reaches the soil. To propagate the plant you need to have a small trench next to the plant. Then remove a little of the bark and lay it in the ground and cover it with soil. Make sure that the tip of growth is uncovered and it will root under the soil.

]]> http://gardeningtip.org/english-gardens/hydrangea/feed/ http://gardeningtip.org/perennials/dahlias/ http://gardeningtip.org/perennials/dahlias/#comments Mon, 09 Oct 2006 03:43:00 +0000 Elizabeth Toshikian Perennials Gardening By Zones Flowers http://gardeningtip.org/perennials/dahlias/ Spectacular, this is the word I would use to describe dahlias. They will give you wonderful cut flowers all summer up until the first frost. They originate from Mexico, Central and South America and were transported to Europe during the 16th century. This tuberous perennial has numerous varieties, rich with amazing colors. Some people are intimidated by the care that dahlias require, but I feel that any garden takes care. The flowers are so amazing with an incredible amount of variety whatever care they need is worth it.

Storage:

The tubers need to be stored in a cool, dry, and dark environment. The frost will turn them to mush; dig up the tuber before the frost comes. Dahlias can be stored in different materials: paper bags, peat moss, vermiculite, and many more. Find out what works for you, I use paper bags or recycled paper. Keep them dormant until the last frost has is over.

Growing Tips:

Plant the tubers after the last frost and in a full sun environment. Dahlias love their faces in the sun and will grow fast in the sun. Plant the tuber about 6″ into the soil and don’t worry too much about the direction the tuber is in. Dahlias will grow up towards the sun. Slugs, snail, and pests love to eat Dahlias sprinkle snail bait on the soil. When the Dahlias are growing make sure there is an adequate about of snail bait. I use “Slugo” because it is great if you have pets. Other wise you can use the hard core stuff. Keep them watered, but don’t over water. They can do well on less water, but will rot if over watered. Add fertilizers to the soil before you plant and keep the nitrogen level low. If you are going to stake them which is recommended do this before they grow. It is always great to establish the support before they get too big. Remove the finished blossoms throughout the season to ensure lots of blossoms.

Bergenia is an evergreen that produces a lot of tubers for division. When one area fills up with the plants dig them up separate the tubers and spread them out.  It will grow quickly if it is well watered and if it is kept dry it will grow slowly . I like to keep them well watered (not over watered) so that I can divide it and spread it around my yard. The blossom is a dark pink to light pink and will bloom in late winter through summer. I can get mine to bloom most of the year, but I have found that they take a break through part of the winter. Its USDA zones are 4-7 and will thrive in a variety of soils. Bergenia prefers alkaline soils and will tolerate some acidic soil. It also likes heavy clay soil and can be divided in the Autumn.
Regional Tips 

Here in Santa Cruz, CA they will produce an abundance of flowers. My mom grows them in a heavy shade garden and they rarely produce flowers. When she comes to my garden she always wonders how I get mine to flower. We enjoy reminding her about the wonders of the sun. My bergenia is in a part shade garden, which is the best. Bergenia don’t like full sun and intense heat. I like to separate the tubers and use them to fill the bare spots in my yard.

Depending on your zone get sunflower seeds in the early spring. After the last frost sow the seeds either directly in the ground or in the starter pots. Use starter pots because you can put them in different spots in your yard. Once the plant is about 8-12 inches you can transplant the sunflower into the sunny spot in your yard. Always water your soil before you plant. If the soil is dry it will take the water from the plant. Water the container before you plant it in the ground. Water wells around the base of the plant will help keep moister in the soil. Mulch the ground to finish the look and as a great last step. Sunflowers can brighten your day and are as great cut flowers. Some varieties will produce many stocks of flowers and last through out the summer and fall.

The Japanese Anemones x hybrida originated in China and was found in Japan in the 17th Century giving it its name. Three popular varieties were developed in the 19th Century: Honorine Jobert, Whirlwind, and Konigin Charlotte. These varieties produce the best of the colors and new varieties are gaining notoriety for their even richer color of dark pink and lilac. They are easy to grow and can be slightly evasive in your yard if you let them.
Japanese Anemones grow in sun/partial shade gardens. Grow them in the USDA zones 4 through 8. They work great under trees and as backdrops in the yard. They like to be protected by larger vegetation or by built structures. The leaf of the plant is around all year and is about 1 foot from the ground. It is a large soft petal from 2-5 inches wide. A stem grows from the ground and is tipped with a leaf. In the late summer the stocks of the flower grows from 2 to 5 feet tall. They are topped with multiple flowers and small leafs. The flowers petals are small 1 inch in diameter and there are 5 petals that are fanned out.

Growing Tips

• Sun/Partial shade
• Protected from sun and wind
• Well drained soil
• Keep watered but don’t over do it
• Acidic Soil ranging from 4.6-6.0
• Lime in the soil is recomended
• After two years the plant will produce and spread
• You can divide in the Winter and the Spring