Don't have too many conifers or other evergreens in a garden or planting, no more than about a third of the total.
classmate
classy
clatter
claustrophobic
claustrophobia
clay
claw
clean
cleaner
clean-cut
cleanly
cleanliness
clearance
clear-headed
clearing
clergyman
cleverness
client
shipboard
shipwreck
shipmate
shipbuilding
sharkskin
shopkeeper
shoplifter
sheepskin
shoelace
shoreline
shopworn
shipshape
shellfish
shoetree
shipyard
shoemaker
shoehorn
sharpshooter
seaworthy
shareholder
shamefaced
sharecropper
seasickness
seaside
seashell
searchlight
seashore
seaward
seaway
setback
shakedown
shakeup
seaweed
sendoff
secondhand
season
seafarer
screwball
seagoing
seaplane
seafood
seafaring
seamanship
seaport
seaman
clothing
cloudburst
cloudless
clout
clone
closeness
closure
close-up
closet
closeout
clothespin
cloak