SUMMER FLOWERING BULBS IN THE HOME LANDSCAPE<\/p>\n
The addition of summer flowering bulbs to the home landscape adds not only beauty but
\ninterest. These plants have a particular form as well as brilliant, clear colors. They
\nare easy to grow and can be saved and planted year after year. They can be planted
\ndirectly in beds or may be grown in containers. A wide choice is possible in the kinds
\nof summer bulbs available.<\/p>\n
Tuberous begonias:
\navailable in beautiful red, pink, orange, salmon, yellow or white flowers attaining a size of 12 to 14 inches in diameter.
\nThe tubers can be planted in flats or pots in March or April to get a faster start, or they can be planted directly in the garden about
\nmid-May.<\/p>\n
If starting them early, use shallow flats or pots that have been filled with coarse
\npeat moss. Press the tuber into the peat moss 3 to 4 inches apart with the concave side
\nup. Place the flats or pots in a dark room such as the basement at 65 deg. to 70 deg.F.
\nAs the pink shoots start to develop, add more peat moss so it covers the tubers and move
\nthem to a sunny window. Keep the peat moss moist, but do not overwater the
\ntubers as they rot easily. Fertilize the young plants with a liquid fertilizer
\nevery two weeks according to the rate on the container.<\/p>\n
About the middle of May, plants as well as unsprouted tubers can be planted in the
\ngarden. Select an area that is well drained and partially shaded. Set the tubers
\nin the ground so they are just covered and no deeper as they are subject to rotting.
\nTo allow for plenty of growing space and air circulation, set the tubers or plants
\n18 to 24 inches apart. It may be necessary to stake the young plants as many of the
\nlarger growing cultivars (varieties) become top heavy bloom.<\/p>\n
Apply a fertilizer such as 4-16-16, 5-10-5, 5-10-10 or 5-20.20 at the rate of 3 to 4
\npounds per 100 square feet at monthly intervals. Water when the soil starts to dry,
\npreferably in the morning or early afternoon. This allows the foliage and flowers
\nto dry before nightfall and reduces chances of disease.<\/p>\n
After the frost has killed the foliage, the tubers must be dug, the foliage removed and tubers dried for a few days. Store in peat moss or
\nsawdust in boxes or other containers but not plastic bags. Place in a storage space that is dry and where
\nthe temperature is maintained around 50 F. Do not allow the tubers to freeze.<\/p>\n
Canna: commonly used years ago where a tall plant with bright red color was
\nneeded. This plant had luxurious green foliage to support the flower. The plant seemed to diminish in popularity but has begun a revival due
\nto new cultivars that offer not only red flowers but pink, orange, yellow and cream. Some even have red
\nor bronze foliage. Some cultivars are tall, reaching a height of 7 to 8 feet, while others are a maximum of 18 inches.<\/p>\n
The rhizomes (underground stems) may be started early, such as with begonias, or
\nthey can be planted directly in the garden. Usually they are planted directly in
\nthe garden about the middle of May. Select a spot that is well drained and receives full sunlight. The rhizomes should be planted a couple of
\ninches below the surface and 18 to 24 inches apart. Water thoroughly after planting and begin fertilizing as soon as the shoots come through
\nthe ground. Use a dry complete fertilizer such as 4-16-16, 5-10-5, 5-10-10 or 5-20-20 at the rate of 3 to 4 pounds per 100 square feet.
\nApply once a month during the growing season and water thoroughly after application. Water the plants when the soil begins to dry and
\nstake if necessary.<\/p>\n
Once the foliage has been killed by frost, the dead tops should be removed and the
\nrhizomes dug. Be careful not to damage them. Remove the soil and let the rhizomes
\nlie on the garage or basement floor for a few days to dry. Then store them in dry
\npeat moss or sawdust in boxes, bushel baskets or gunny sacks. Select a spot in the
\nbasement or where they will be dry and can be kept at 45 to 50 F. Do not allow them
\nto freeze.<\/p>\n
Gladiolus: grown for their magnificent flowers, which come in all colors. There
\nare large flower types as well as small. They can be used as background plants in
\nthe garden or as cut flowers for inside the home. If care is given to a planting
\nschedule, flowers can be available from early summer until frost. Therefore, it is
\nadvisable to separate the corms into various planting dates so flowering can be spread
\nout.<\/p>\n
The first corms can be planted as early as May 1. Set the corms 4 to 5 inches deep
\nand 5 to 6 inches apart. If they are grown in rows, allow 36 inches between the rows.
\nIn two wee%s, plant the next group of corms and continue this procedure until the
\nlast of July. By so planting, flowers will be available almost anytime during the
\nsummer. As soon as the plants are 6 to 8 inches tall, apply a complete dry fertilizer
\nsuch as 4-16-16, 5-10-5, 5-10-10 or 5-20-20 at the rate of 3 to 4 pounds per 100
\nsquare feet. This is the only fertilizer that will be needed during the growing season.
\nWater the plants thoroughly when the soil starts to get dry.<\/p>\n
After the foliage has dried in late summer or autumn, dig the corms, remove the soil and
\nsnap off the dead tops. The old corm or “mummy”may also be removed at this time
\nif still present. Spread the corms out on the garage or basement floor and allow to
\ndry for three or four days. Place the corms in boxes with dry peat moss or sawdust.
\nIf a large number of corms are involved, make some boxes that are 3 to 4 inches deep
\nwith bottoms made of hardware cloth. Store the corms in a dry, cool place at a
\ntemperature of 35 to 40″F. Check them periodically during the winter for signs
\nof rotting or rodents.<\/p>\n
Prepared by: James L. Caldwell<\/p>\n
Extension Horticulturist
\n The Ohio State University<\/p>\n
