Monday, September 28, 2020 / by Gary Semeniuk
Fall is a little bit like a reverse spring. Everything is starting to wind down as winter approaches, and for a lot of gardeners, that’s a sad time. It doesn’t have to be, though; fall can be a time for laying the groundwork for spring plants and creating dazzling garden displays.
What to Plant
Fall planting can be tricky, largely because the plants that prefer to be planted in the fall can vary widely depending on where you live. However, if you live where it gets cold enough to frost or freeze, you can bet on many of these being excellent candidates:
- Spring bulbs. Tulip, daffodil, Crocus, Allium, hyacinth, lilies, and even Iris are awesome choices for planting in the fall. They don’t generally need to be lifted, so they can be planted in those short days before the first frost hits. You’ll reap the fruits of your labor when the ground starts to warm up again.
- Perennials. A huge range of perennials do great when planted in the fall. Bleeding hearts, Rudbeckia, Sedum, Coreopsis, garden Chrysanthemums, Asters, Hostas, and many others are not only great for end of year color, but will reliably return year after year to put on a dazzling show.
- Shrubs. Looking for some show-stopping fall color? There’s no better time to choose and plant these kinds of shrubs than in the fall, when they’re at their best. Look for shrubs that produce berries and sport lovely fall foliage like Nandina, Viburnum, Pyracantha, and beautyberry. These will provide your local neighborhood wildlife with a little extra forage, and give you some extra fancy natural holiday decorations.
- Trees. Most trees thrive when planted in the fall; it’s their best season! Planting your young trees in the fall, well before your first frost, gives them time to establish their roots without risking drying out. Not only do you increase the odds that your trees will survive by choosing to plant them in the fall, you’ll skip all the major maintenance required to nurse a fresh, new baby tree through a hot summer. It’s really a win-win.
When to Plant
Timing is everything when you’re planting in the fall. It’s not enough to ensure that the ground is unfrozen and workable; you should also give your young plants time to grow and spread their roots before they go dormant for the year. You can look up your first frost date on a reliable gardening site like The Old Farmer’s Almanac. Count back six to eight weeks and plan to plant your garden at that time.
Planting too close to a frost can cause significant damage to your new plants, or even result in their deaths from too much stress. After all, moving into a new neighborhood can be tricky, even for a plant, and they need time to repair roots that have been injured during the process. A few extra weeks to start going into dormancy will help them come back strong in the spring.
For the most part, fall plantings won’t need a great deal of protection as long as they’re planted in a timely manner. What they will need is mulch, and lots of it. It doesn’t really matter what kind of mulch you use, so long as it’s biodegradable and can be piled on deep.
If your area sees snow and freezing temperatures, go for about four inches of mulch per planting, evenly distributed across the top. Wait to cover the crowns until you’re actually at risk for frost, but the root area of the plant can be covered the day you plant it. These kinds of mulches help the plant retain moisture and acts as insulation to keep the warmth from the sun in the ground longer.
As your plants die back for the year, mulch the entire area, making sure to carefully check tender plants for new growth as temperatures rise in the spring. When you see those little green sprouts popping up, uncover them (but leave the rest of the mulch) so they can continue on their upward journey.
Not Sure What to Plant This Fall?