Over the last six years that we have been helping people with their
gardens, one of the most repeated complaints is about small critters like chipmunks. Dealing with these crafty creatures can be difficult but not
possible. Our new home in New Hampshire has rock walls in the front and back
walls on the side raised beds against foundation. Pretty, but it's a chipmunk paradise playground. Chipmunks are everywhere around here. Normally I
wouldn’t be concerned however chipmunks can cause tremendous damage to your
foundation as well as the staircases and rock wall retaining walls that we have
around the property, not to mention our garden. Last year Mark's hot pepper plants never stood a chance to fruit before the chippies ate the starts.
Chipmunks indigenous to North America with one exception of Siberian chipmunk. Otherwise there 24 types of chipmunks running around the woodlands, forests, deserts and suburbia as well as urban parks from Canada all the way down to Mexico. These cute little creatures seem to be everywhere, particularly in our gardens. Perhaps between learned more about chipmunks, we would understand them better and possibly be able to keep them from our garden.
Only weighing in around one ounce to 5 ounces tops, these
little critters are a nimble bunch. They need to be since they could be eaten
anytime by any larger carnivore that maybe around. Our property is filled with
Chipmunks but it is also filled with all the its predators including owls, foxes,
bobcats, coyotes, dogs, snakes and red squirrels. Chipmunks belong in this
world family but that doesn’t keep red squirrels from making them a tasty lunch
if the opportunity presents itself. All these predators are one reason
chipmunks don’t travel very far, generally only roaming about a third of a mile
preferring to stick closer to their main burrow. Chipmunks burrows are about 2
to 3 feet underground, but their tunnels can be as long as 20 to 30 feet. Their
tunnels are quite intricate, they actually utilize two systems. Shallow burrows
are used for refuge while they are foraging during that period they have deeper
channels which they use for nesting in food storage although they have separate
chambers for each of these areas. Their tunnels are quite neat, no dirties
around the entrances since they carried away in the cheeks.
Disney's Chip & Dale |
Chipmunks move soil
and store food in their cheeks which can hold three times the size of their
head making them look cartoon-like. This is probably why Walt Disney created
Chip and Dale backing 1943. Walt Disney artists would go out into the woods and
study woodland creatures they were tasked to draw for their movies. They would
draw sketch after sketch until they understood how these critters moved and what
their expressions were like. Anyone who is familiar with the antics of Chip and
Dale who also has a vegetable garden would probably agree that Disney pretty
much nailed it.
Picky Eaters? No, not at all!
Chipmunks are omnivores and will eat pretty much everything.
They love seeds, berries, bulbs, nuts, insects and mushrooms; not to mention
bird eggs and baby birds. As chipmunks forage for their food
to store they perform one of their most ecologically important tasks they are spread seeds and important mycorrhizal fungi, playing an important role in forest health and regeneration.
Interestingly, chipmunks need to sleep 15 hours a day meaning
we see them only during the remaining 9 hours. There is much to be done during
this time which is they always seem to be out when we are out. During the
wintertime, chipmunks don’t hibernate completely, but they are so inactive that
their heart rate and body temperatures drop. When they get hungry they rely on
their food storage is accessible but is in a separate chamber than they’re
sleeping area.
Alvin & The Chipmunks |
Contrary to Ross Badgdasarian’s famous family animated trio,
Alvin, Theodore and Simon, chipmunks are solitary creatures– unless it’s
breeding season of course. Chipmunks mate in the spring and late summer and
have litters of that 2 to 6 pups. Male chipmunks, known has bucks, have one
role and that it to mate. The female, known as the doe, carries and cares for the
litter until the pups leave the nest.
If you’ve ever had the chance to simply watch a chipmunk
in action undoubtedly then heard one as well. They use a bunch of different
vocalizations including chips, chucks and chilling alarm calls. Some of
these high-pitched sounds can easily be mistaken for a birdcall. The other day
at we are out on the deck with the dogs and there was a chipmunk who was very
talkative, confidently chattering away from the other side of the dog fencing we
have surrounding out deck. I thought the dogs were going to lose their minds,
but they just stared at the talkative little chippie who undoubtedly was giving them an earful. Chipmunks are very territorial and protect then areas around their main burrows.
Now that we have a better understanding of chipmunks, is
there any way to keep them out of our gardens? After all, isn't our garden a buffet
of tasty treats to the chipmunk? Are there ways we can still enjoy tulips and
another bulbs chipmunks continually eat the bulbs, seeds, starts and anything
else that we might to plant?
Yes, there are things that we can do to try to deter
chipmunks from coming into the garden and wreaking little less havoc. First of
all, try to keep rock walls out of the garden since love to nest in rock walls
unless of course you have to a retaining wall put in for landscaping purposes
just know that chipmunks love to build their tunnels near structures like
retainment walls and foundations. These
burrows can compromise these structures, as well as plantings that may be above
them – destroying their root systems. They also love old logs, trees, stumps
and areas that have plenty of ground cover – so take that into consideration if
you have a chipmunk problem in your garden. We removed some of the old stone walls that were in the old garden
Use hardware cloth over a freshly planted area covered with
mulch can help mitigate damage to bold that you hope overwinter to bloom come
springtime. Simply remove the hardware cloth in the early spring once the
winter snow so thawed. There are also some plants you can introduce into your
garden which chipmunks do not like at all– particularly due to their fragrance.
Chipmunks are sensitive to smell and don’t like fragrant perennials like
monarda (Bee Balm), hyssop (agastache) or lavender. Generally, chipmunks are
sensitive to texture as well, staying clear of thorny and hairy leaves and
plants.
Perennials Chipmunks Don't Like
Bee balm (Monarda)
Black-eyed Susan |
Black-eyed Susan
Butterfly bush (Buddleia)
Catmint (Nepeta)
Chives
Delphinium
Daffodil (narcissus)
Hyssop (Agastache)
Irises
Joe pyeweed (Eutrochium)
Lavender
Lavender |
Lupine
Milkweed
Ornamental garlic (allium)
Ornamental Primrose/ sundrops (Oenothera)
Phlox
Purple coneflower (echinacea)
Sedum
Sneezeweed (Helenium)
Yarrow
There are a number of annuals which holds no interest for
the chipmunk– all of which would be happy in the garden making a wonderful
companion plants bringing in beneficial as well.
Annuals Chipmunks Don’t Like
Ageratum
Zinnia |
Alyssum
Calendula
Celosia/Cockscomb
Dianthus
Heliotrope
Lantana
Marigolds (tagetes)
Petunia
Annual Salvia/Sage
Snapdragons
Zinnia
Other helpful ways to keep the Chipmunks away from the
garden is to be sure to deadhead your flowers that form seed heads like marigolds
and zinnias. Chipmunks loveseat heads, so deadheading flowers is always a good
idea. How many times have we all found half eaten or slightly eaten tomatoes in
the garden? Any time is too many times. The reason for this is not that chipmunks
are necessarily hungry, but rather that they are thirsty and seeking sources
for water. A couple of strategically placed birdbaths should help keep the
chippies and birds from taking a bite out of your prize tomatoes.
Be careful not to include flowers that will attract chipmunks.
There are plenty of flowers that chipmunks consider tasty treats. The best way to include some of these flowers
in your garden plan is to surround them with plants and flowers they hate and
hope for the best.
Flowers That
Chipmunks Love
Chrysanthemums
Lemon Queen Sunflower |
Columbine (aquilegia)
Coreopsis/Tickseed
Daisies
Lilies
Pansies
Seedlings of any type
Sunflowers
Tulips
Violas
Other natural ways to determine chipmunks in the garden
include the use of cayenne pepper sprinkled around the plants. Remember they
don’t like fragrant or spice and capsaicin is a powerful deterrent. It’ easy enough to also make a homemade pepper
spray which is safe to spray on your bulbs and plants’ leaves and stems to keep
the chipmunks from going to town.
Homemade Pepper Spray
1 quart of boiling water
2 tbs. ground cayenne pepper
2 tbs. oil
- Drain the cooled down water and ground cayenne pepper through a cheese cloth and add 2 tbs of oil – shake mixing well.
- Put liquid into an unused or clean spray bottle and use on whatever it is you wish the chippies to stay away from. Reapply after rain or once a week.
There is no surefire way to keep chipmunks from coming into
the garden, their size and acrobatic abilities make fencing impossible;
however, sheer netting can be effective in extreme cases. The best way to deal with chipmunks is to
understand what they like and dislike and try to work to live in harmony with
each other in our gardens. Good luck to us all.