September Gardening Tips By Joe Daniels, Master Gardener
Could it be that the last few days of summer are upon us? They say time flies when you're having fun. (Do you think many school-age children feel that way?) Here are some things you can tend to for the next few weeks. Keeping up with maintenance will allow you to continue to enjoy the garden until the weather turns frosty.
Seasonal Chores
Enrich garden beds with compost or peat moss. Don't forget to compost both fallen leaves and grass clippings as well as kitchen scraps. Learn how to compost--it’s the ultimate in recycling.
Collect soil samples now for testing so you can correct pH imbalances. PSU test kits cost $9 and are available at our Smedley Park County Extension office.
Fall is harvest time, including harvesting of choice seed from favorite and top-performing non-hybrid wildflowers, garden flowers, herbs and vegetables.
Many large garden spiders will be seen at this time. Most are beneficial and not poisonous. To reduce spiders in the home for winter, seal up cracks and spaces at the foundation and remove debris nearby.
Apply touch-up mulch if needed.
Generally no more fertilizer should be applied to plants.
September is often a dry month; water as needed.
Keep up weeding, deadheading, and pest patrol.
Vegetables
Seed cold-hardy vegetables now, including peas, lettuce, green onion sets, radishes, and spinach. Plant garlic now.
Continue to harvest vegetables at their peak. Ripe and overripe vegetables can be magnets for rodents and other pests. Have too much zucchini? Donate your excess to a local food bank!
Harvest garlic and onions when the tops have dried up. Pull up the whole plant (top and all), let it dry, and then braid garlic or onions together for winter storage and an attractive decoration. Onions with thick necks do not store well and should be used first.
Perennials, Biennials and Annuals:
Plant perennials, as many do best if planted in the fall. Need perennials? Come to our Master Gardeners Fall Fest Plant Sale. (We also have trees, shrubs, cacti and houseplants)
Start perennials from seed this month. Allow seeds of delphinium and hollyhock to self-sow.
Collect wildflower seed from native plants in your garden.
Divide and plant daylilies, iris, peonies and phlox. Eliminate weak or diseased plants
Harvest cut flowers for drying--baby's breath, celosia, statice, and strawflower. Hang plants upside down in a dry and well-ventilated area.
Bulbs
Early September is the time to plant irises. Add organic matter and fertilizer to the soil prior to planting. Remove dead leaves and trim fans to about 4 inches tall. Plant near the surface (top of rhizomes just visible), about 12-18 inches apart. Water often for a few weeks.
When the weather cools, begin planting spring-flowering bulbs. (crocus,daffodils, tulips,etc.). If this September is still warm, wait until October. Discard any bulbs that are rotting or infested.
As a general rule, plant bulbs at a depth of 2 1/2 times the bulb's width.
Dig up any tender bulbs (summer flowering, e.g., gladioli, dahlias, and tuberous begonias) and store them in a dark, well-ventilated area. This is best done before the temperature drops below 50 degrees or no later than when a slight frost has been observed on the leaves.
Note from Marion: Joe is right about compost. My plants love it! And I feel good about recycling all those kitchen scraps and garden clippings instead of sending them to a landfill. If you’d like to learn how to compost (and receive a FREE compost bin), register for our Fall Fest composting workshop.
Do you have a gardening question? Call our Delaware County Master Gardeners hortline at 610-690-2671 on Tuesdays and Thursdays from 9 AM-12 NOON.
UPCOMING MASTER GARDENERS EVENTS
September 8, 2007: Gourds & Birdhouses
Learn how to make birdhouses and other useful items from gourds you can grow in your garden. This is a hands-on workshop.
September 29, 2007: Master Gardeners Fall Fest & Plant Sale
We've planned a great day for you--interesting workshops, self-guided tours of our beautiful display gardens, our spectacular fall plant sale and our popular frugal gardener sale.
Registration required for all events (except plant sale). Please call 610-690-2655 for more information or visit our website
There’s a 


Summer may be winding down, but the gardening season is far from over. The annual 
Winter greens and holiday decorations are most likely the last thing on your mind as you enjoy these last fleeting weeks of summer. Yet now really is the time to sign up for the Master Gardeners’ holiday wreath-making workshop, to be held December 8, 2007, from 10am to 12 noon. If the last two years are any indication, this annual December workshop will fill up in record time.
Every year, participants marvel at the gorgeous holiday wreaths they’re able to create, frequently comparing their works of art to those they see for sale for $100 and more in catalogs and floral shops. 