June 18, 2003
The
Summer Watering Issue |
|
Summer Sun,
Something's Begun...
Although summer hasn't officially arrived
on the calendar we seem to be getting a good taste of the warm,
hot summer days that lie ahead. Actually I have been
enjoying the warmer weather and so are some of my sun loving
plants. Our Stella d'Oro's are in full bloom and are
fabulous. The roses and the coneflower seem to have
thousands of blooms! The time has come for those sun
lover's to take the stage! My spring blooming perennials
are beginning to slow down a bit but their foliage still remains
lush and green. Now we have to get tough and follow some
hard fast rules to get us through the grueling summer heat.
This week's tips are all related to watering through the summer.
Have you been listening to Gard'n-Wise Guys John Bruntzel and Jan
Olson Sunday mornings from 7 - 9 AM on WDAF 61 Country? If
you haven't you are missing out! Not only are these guys
fun and entertaining but they know gardening! So tune in,
laugh a little and learn a lot!
Make sure that you always check out
The Sweet Onion's specials page. There are always great
deals on flowers and other items at The Sweet Onion.
~
Shelly
Veggies Need More...
We've stated in the past that most gardens require one inch
of water per week. As the weather heats up however water
consumption for a vegetable garden will gradually increase up to
two inches of water per week and then taper off again as the
weather cools. Remember that it is imperative for you to water
deeply once or twice a week. Watering a little bit every day is
just not good for the plants.
Other
watering tips for your veggies:
-
Concentrate your watering in the root zone. Soaker hoses and
drip irrigation systems are great methods.
- Related
to the above, try to minimize watering of leaves. This will
help prevent disease.
- Water in
the morning between 6:00 and 9:00 AM. Midday watering wastes
water. Evening watering may lead to plant disease.
- Keep the
garden well weeded to eliminate competition for water.
- Use
mulches to aid water retention in the garden soil.
Coping With Containers...
Container plants (those in pots, window boxes, hanging
baskets, etc...) are the first to be affected by lack of water.
Since the container itself is exposed on all sides the sun and
heat cause the limited amount of soil to dry up much quicker than
in a garden. As a general rule you should water containers until
the water drains out the holes in the bottom. During the summer
it is not unusual to do this two or three times a day.
Competitive Nature...
Don't let grass or weeds grow beneath your trees and shrubs.
They compete fiercely for available water and will slow the
growth of trees, especially newly planted ones. Worse yet, the
longer turfgrass grows under trees and shrubs the greater the
reduction of new growth. Left alone a cumulative effect may
decrease tree growth for several years. For instance, if the
growth of a tree is reduced by 20 percent for one year because of
grass competition, the growth automatically is 20 percent less
during the second year's growth. Grass competition alone reduces
tree and shrub growth by as much as 50 percent.
Source
Flowers - Blooming Not
Burning...
Different flowers have different watering needs. The one
inch of water per week rule is a good start but it's always best
to keep an eye them. Look for the telltale signs of drought
stress including wilt, droopiness, and the premature loss of
foliage and/or blooms. Like vegetables your flowers will benefit
from deep and infrequent waterings. Also, a couple of inches of
mulch will do wonders to help retain soil moisture during the hot
sunny weather.
Another
good long-term strategy would include greater use of drought
tolerant flowers. Savvygardeners can find a list of these water
efficient marvels (suitable for the Kansas City area of course)
here...
A Hose By Any Other Name...
Hoses are easily the most common means of getting water to your
gardens and containers. Most gardeners give little thought to
their hoses until it's time to replace them. If you are
replacing a hose or just interested in a new one take a little
time and choose one that's best for you. Like most tools, hoses
are available in varying quality levels with prices that usually
follow. Hoses come in different diameters but 5/8-inch is the
most popular. Different diameters deliver different flow rates
and this may be an important factor in your choice. Use this
table to assist in sizing.
Flow Rates
from Different Hose Sizes and Water Pressures |
Pressure |
1/2 inch |
5/8 inch |
3/4 inch |
1 inch |
20 psi |
4 gpm |
8 gpm |
12 gpm |
26 gpm |
30 psi |
5 gpm |
9 gpm |
15 gpm |
32 gpm |
40 psi |
6 gpm |
11 gpm |
18 gpm |
38 gpm |
50 psi |
7 gpm |
12 gpm |
20 gpm |
43 gpm |
60 psi |
8 gpm |
14 gpm |
22 gpm |
47 gpm |
Flow rates are
in gallons per minute (gpm). 40 psi is typical water
pressure for most homes. |
Source
Grass Guzzlers...
For many of us our lawns are the single biggest users of
"gardening water". Unfortunately excessive watering is wasteful
and can actually be harmful to your lawn. If waterings are too
light or too frequent the lawn can become weak and
shallow-rooted, which in turn makes it more susceptible to stress
injury. To make sure you get it right use the following steps to
determine the amount of water your sprinkler or sprinkler system
puts out and check its distribution pattern at the same time.
-
Determine the rate at which your sprinkler applies water to the
lawn.
- Set
out three to five empty cans in a straight line going away
from the sprinkler. Set the last can near the edge of the
sprinkler's coverage.
- Run
the sprinkler for a set time such as 1/2 hour.
-
Measure the amount of water in each can.
- Each
can will contain a different amount of water. Usually, the
can closest to the sprinkle will have the most water. The
sprinkler pattern must overlap to get an even wetness of the
soil. Use this information to find out how long it takes
your sprinkler to apply 1 inch of water. For example, if you
find that most cans contain about 1/4 inch of water after the
sprinkler runs 1/2 hour, it would take 4 x 1/2 or 2 hours to
apply 1 inch.
- Run
the sprinkler long enough to apply at least 1 inch of water or
until runoff occurs. If runoff occurs first:
- Stop
sprinkler and note running time.
- Allow
water to soak in for 1/2 hour.
- Start
sprinkler.
- If
runoff occurs, repeat above steps until at least 1 inch of
water has been applied and allowed to soak into the soil.
- Do
not water again until the lawn has completely dried out. (This
usually takes 5 or 6 days.)
- Apply
enough water to wet the soil to a depth of 4 to 6 inches.
- Avoid
frequent light applications of water.
- Water
in early daylight hours.
- Select
a turfgrass with a low water requirement.
- Avoid
using soluble nitrogen fertilizers. (They promote high growth
rates which, in turn, increase water requirements of the
plant.)
Source
Finally... "Successful
gardening consists of
One part soil,
Two parts water,
Three parts prayer."
~ Popular Gardening Wisdom |