Pumpkins, with their edible flesh and long storage life are a warm season crop. They require a long growing season of nearly 85 days, so it’s best to start them indoors from seed. About a week after the last frost (on average May 15 along the northern Colorado front range), pumpkins can be planted outdoors. But be careful, pumpkins do not like their roots disturbed. We recommend starting them in a natural peat-pot (offered in the garden shop) that can be planted directly in the soil.
Choose an area in your garden or yard that receives plenty of sunlight, and has at least 8 ft. x 8 ft. for pumpkin vines to spread. Soil should be rich with organic matter, but not over-fertilized, which can stunt fruit growth.
Pumpkins will start to develop after blossoms are pollinated, so encourage pollinators to visit your garden with other flowering plants. Also avoid using pesticides in and around your garden, since also harm beneficial insects as well as pests.
To increase the size of giant pumpkins, pick a few nice-sized fruits and cut back the vine just beyond them. This will help all the resources of the plant to be devoted to the growth of those remaining pumpkins.
Interested in entering our annual Giant Pumpkin Contest? See our Calendar of Events and check the month of October for the exact date. Get growing!
PlantTalk Colorado – Growing Great Pumpkins
Rocky Mountain Giant Vegetable Growers
Old Farmer’s Almanac: Pumpkins
You Tube: Larry Checkon, the world record holder for the largest pumpkin
Sunflowers are not only an attractive flower, they also have rich history providing edible seed crops. Sunflowers do best when planted directly in the soil, after night temperatures warm to above 50 degrees. As their name suggests, need plenty of sunlight (minimum of 6 hours per day). They will also turn their flower heads to follow the sun from east to west.
For giant sunflowers, make sure to chose an area in the yard near a fence or support structure. Sunflowers tend to become very top-heavy as seeds develop, sometimes pulling themselves over. Watering sunflowers deeply but infrequently encourages deep root development (which will also help them stand upright). Sunflowers can also be utilized for shade and structure for other vegetables in the garden.
In order to keep birds and squirrels from helping themselves to sunflower seeds, paper bags, nylon mesh or nets can be placed over the flower heads. The best bet is to plant a few extra for wildlife to enjoy, and you to enjoy watching them.
Sunflowers tend to attract aphids, which will feed on the plant and cause some stunting. Instead of using a pesticide, which can harm beneficial insects such as bees and butterflies, try spraying aphids off with a jet of water.
Looking for some late-summer, early autumn perennial bloomers? Add a colorful chrysanthemum to your flower bed or fall container garden! Fort Collins Nursery offers hundreds of these prolific, hardy and beautifully bushy perennials.
Mums come in a wide variety of colors, from yellow, pink, magenta, red, lavender, and more. Blooms on mums typically last for weeks providing a late-summer boost when other flowers have given out. And did you know that mum’s flowers are edible?
Fort Collins Nursery also offers a great selection of colorful asters, also a hardy late-summer and autumn bloomer. Small, abundant, star-shaped flowers tower on 2-3 foot plants, providing a nice backdrop in perennial beds.
Both mums and asters appreciate full sun, and a good dose of compost when planted. They also prefer water at their base, not on the leaves, which encourages powdery mildew.
Now that most of the planting has been done, summer blooms call us to linger in the garden a little longer. As you’re relaxing outdoors, it’s a great time to think structure and embellish your landscape.
Have a small, tucked away corner? Add a sturdy garden bench to linger and renew your perspective. Lead the way with our decorative stepping stones.
How about a hot, dry patio? Imagine the cooling effect of trickling water from a beautiful and unique patio fountain or a misting system that you can install in minutes and bring the temperature down by up to 20 degrees. The birds will appreciate it, too! You could also encourage more backyard birds with strategically placed bird baths.
Add height anywhere with a freestanding trellis, perfect for climbing clematis, or plant stand, a great way to feature a blooming annual patio pot!
Hardscape features add focal points and year-round interest. Spend some time on our patio and you’ll see!
Our Colorado environment is home to some amazing native shrubs. Not only are these shrubs disease resistant and perfect for our native soil, they attract birds, butterflies and provide year-round interest.
Try adding to your landscape a sumac, Apache plume, serviceberry, rabbitbrush, fernbush, mountain mahogany or buffaloberry.
These shrubs have some very unique features, such as the curly, furry fruit of the mountain mahogony, reddish-orange berries of the buffaloberry or the white clusters of flowers of the serviceberry. After proper placement and establishment, these shrubs require little care.
You won’t find these shrubs outside the southwest region. Adding them to your landscape helps keep the area diversified and encourages the local ecosystem. They can be blended seamlessly with non-native plants, depending on the shrubs water and sun needs.
Ask for a tree and shrub representative to help find these native shrubs to match your landscape needs. We also offer many native trees and perennials, come out and see!
Do some of your plants look like they need a pick-me-up? Iron supplements can correct chlorotic plants. Symptoms include a general yellowing on all or just part of the plant, along with visibly green veins. Talk to one of our nursery professionals about the right iron product for your situation.
As the weather turns warm and dry, now is a critical time to water efficiently. Outdoor water use accounts for about 55 percent of the residential water use in the Front Range urban area, most of which is used on turf, according to the Colorado State University Cooperative Extension.
If you just planted a tree, shrub or perennial, plants will initially take more water to become established, especially in the heat of summer. After they have become established, make sure to adjust their irrigation cycle. A thick layer of mulch, in the form of wood chips, gravel or black plastic, will reduce the amount of water that is lost to evaporation. Make sure to water before or after the hottest parts of the day. Also, keep an eye on rainfall and adjust irrigation cycles accordingly.
The City of Fort Collins offers a free sprinkler audit to city utility customers through August, first come, first served.
Also check out more information offered by the Northern Colorado Water Conservancy District.
Did something new pop up in your garden? Did you hope it was a volunteer? Keep a close eye on your garden for noxious weeds. Invasive, aggressively-spread weeds can take over after very little time.
Some of the worst Colorado noxious weeds are: leafy spurge, spotted knapweed, diffuse knapweed, Russian knapweed, Canada thistle, musk thistle, Dalmatian toadflax, yellow toadflax, field bindweed and purple loosestrife.
For a list and photos of Colorado noxious weeds, visit: http://weeds.hotmeal.net.
Make your garden more hospitable to bees and butterflies!
- Reduce the use of pesticides
- Plant nectar-rich food that blooms through the summer
- Provide a shallow water source and a flat rock
- Leave a small patch of bare ground for bees to establish underground nests
Bees are most attracted to white, yellow, blue, pink and purple flowers. Try planting wild lilac, western and eastern redbud, flowering quince, cranesbill, lavender, catmint, rhododendron, rose and salvia.
Butterflies need a food source all summer long, so try: yarrow, hyssop, anemone, aster, bluebeard, tickseed, foxglove, coneflower, potentilla, bee balm, Russian sage, blackeyed Susan, pincushion flower, stonecrop, spirea, verbena, milkweed and butterfly bush.