Easy Fall Planting
Fall is the second-best time to plant, with some saying it’s the best! There are flower seeds you can sow after hard, killing frost for earlier blooms next season. Landscape plants, like perennials, trees, shrubs, and evergreens benefit from the less stressful cooler weather, reduced pest and diseases, and focus their energy on root development. Garlic bulbs and fall flower bulbs are also planted in the fall and they are as easy as dig, drop, and done
FALL SOWN SEEDS
Sow perennials after a hard frost, below 25 F, that need stratification, the process of seeds being in a cold environment and then breaking dormancy once the weather warms. This ensures that they will not sprout until the following spring.
Mark the spot. Label the area of sown seeds with stakes. If we have a dry winter and less rain in the spring, make sure to water your seeds in the spring to keep soil moist.
We get a shipment of the next years seed from Botanical Interests in late summer, and they provide a list of perennial and biennial varieties that need stratification for higher rate of germination. Sow these after a hard frost to avoid early germination.
- Blue and Breezy Flax Seeds
- Russell Lupine Blend
- Sundial Lupine Bluebonnet
- Colorado Blend Yarrow
You’ll get earlier blooms and reduce time in the late winter/early spring sowing seeds indoors and transplanting seedlings when warm enough. The moisture from melting snow will greatly reduce your need to water in the spring.
Tips for sowing annual seed:
Sow the seeds after a killing freeze but before snow. You may also sow in late winter between snow fall. The snow helps bury seeds and insulates them, helping to retain moisture.
Mix the seed with a bit of sand before sowing. This helps you space your seed more evenly and gives you a better visual of where you sow your seed.
Mark where you planted with labeled garden stakes to avoid damaging emerging flowers.
Annuals to sow in the fall:
- Bachelor Buttons
- California Bluebells
Info Source: Botanical Interests
Garlic is one of the easiest to grow crops. The bulbs are planted in the fall and they are start to emerge early spring. They don’t mind hot summer weather, require little watering if we have consistent rain, and need well-draining soil. We recommend adding compost to your planting area two weeks before planting your garlic. Download our Growing and Storing Guide below or pick up a copy in the store when you get your garlic bulbs.
FALL PLANTED BULBS
Bulbs are really as easy as dig, drop, and done. Each bulb packet will tell you the depth to plant and timing since they have different depth needs. When planting, make sure the soil is well-draining (soil doesn’t stay soggy more than a day) and use Bulb Tone to get their roots off to a healthy start before the ground freezes. Amend your soil with compost or top soil if it’s compacted or not well-draining.
Fall is a wonderful time to plant! The heat of the summer is done and the cooler weather is less stressful for the plants during transplanting. The soil also stays moist longer, which requires less frequent water for you! We always recommend mulching around your new landscape plants, leaving a couple inches open around the stems, and wait to do heavy mulching (more than 2 inches), until the ground is completely frozen.
Trees, Shrubs, and Evergreen
Trees, shrubs, and evergreens can be planted up to 6 weeks before ground freeze (average ground freeze is beginning of Dec.). If the trees or shrubs are dormant by the time of planting, you may not need to water if the soil stays slightly moist. Make sure to mulch 2-3 inches around the root zone and wrap your tree saplings Oct. 31st or as soon as possible after that. If you have issues with rabbits or deer around, get a hard plastic mesh tree guard. You’ll be happy you did because if animals chew around the entire tree diameter, it’ll cut off nutrients to the tree. Shrubs and evergreens can also experience animal damage from hungry animals so use a granular or spray animal repellent or fencing.
Deeply water your plants all the way up to ground freeze. Only water when the top 2- 3 inches are dry. It’s usually 5 gallons of water every week to two weeks depending on your soil type, size of the plant, and weather.
Here is an extra note about evergreens. It’s very important evergreens have adequate water before ground freeze or you may experience browning of needles the next spring. Evergreens do better when planted early fall instead of late fall to help them take up moisture before freezing. They slowly lose water from their needles over winter and if they are in an area of high winds and/or bright, all day sun, it dries them out quicker. Read more about evergreen winter care.
You can plant perennials up to 6 weeks before ground freeze (average ground freeze is beginning of Dec.) but sooner the better for transplanting success. Just make sure they are watered until freeze and heavily mulched to protect their root systems once the ground is frozen, and no sooner. Smaller potted perennials tend to have shorter root systems before they are established in your soil. When planting use a slow release fertilizer, like Biotone, and keep the deeper soil moist, not soggy. When the top couple inches are dry, it’s safe to water. The plant roots will reach deeper into the soil and create a more robust root system if you water longer and deeper and can reduce watering frequency.
Fall is also a good time to split perennials that have bloomed in the spring or early summer. Iris and peonies, in particular, should be split during the fall months. You can split other perennials but the rule of thumb is if it blooms late summer or fall, split in the spring and vice versa. Don’t transplant perennials while in bloom but if you absolutely need to split them, wait a few weeks after blooming. Dividing perennials (PDF List of perennials and dividing time)