- Author: Melissa G. Womack
Here are seven tips on how to protect your plants from freezing temperatures in California:
- Water your plants. Make sure your plants (not succulents) are hydrated before a freeze. Water the soil around the base of the plant, this will help to insulate the plant and keep it from freezing.
- Cover your plants. Use blankets, fitted bed sheets, or frost cloths to cover your vulnerable plants. Make sure the cover reaches all the way to the ground and is securely fastened to prevent cold air from seeping in. Do not use plastic covers, as they can trap moisture and damage the plant. Make sure to remove the covering when the temperature rises.
- Add warmth for your plants. Use incandescent miniature lights (not the LED type) to provide warmth and raise the temperature around your plants. Position a 100–150 watt light in the center of the tree and cover the plant with a sheet.
- Bring potted plants indoors. If you have potted plants, move them to a sheltered area (ie. Porch, indoors, under an awning), when temperatures are expected to drop. If possible, cluster potted plants close together in a sheltered spot close to the house. If plants are brought indoors, place them near a window that gets sunlight.
- Mulch your plants. Apply a layer of mulch around the base of your plants. This will help to insulate the roots and keep the soil warm.
- Prune your plants. Prune any dead or damaged branches from your plants before a freeze. This will help to prevent further damage from occurring.
- Monitor the weather. Stay up-to-date on the latest weather forecasts and take action if freezing temperatures are expected. If possible, move your plants to a warmer location or cover them before the freeze sets in.
It's important to note that different plants have different levels of cold tolerance. Some plants are more susceptible to freezing temperatures than others. If you're unsure about how to protect a particular plant, consult with your local UC Master Gardener Program for advice, mg.ucanr.edu/FindUs.
By taking these steps to protect your plants from freezing temperatures, you can help ensure that they stay healthy and vibrant year-round. With a little extra care, you can keep your garden looking beautiful no matter what the weather brings. Stay warm this week!
Additional Resources:
Frost Protection for Citrus and other Subtropicals (UC ANR publication 8100)
https://anrcatalog.ucanr.edu/pdf/8100.pdf
UC Master Gardener Program of Marin County, Problems, Extreme Conditions – Frost
https://marinmg.ucanr.edu/PROBLEMS/EXTREME_CONDITIONS/Frost_853/
- Author: Melissa G. Womack
- Author: Skylar Peters
February is a great time to start preparing for your spring and summer vegetable garden, especially if you want to get a head start on the growing season. According to the California Master Gardener Handbook, growing your own transplants from seed indoors can extend your garden season by several weeks, reduce your gardening cost and allow you to grow a more diverse variety of crops.
Growing from seed is not only fun, but it can also save you money. When stored properly a typical seed packet can last several years. Seeds should be started indoors or in an outdoor hot box or cold frame. Start growing the seeds 6-8 weeks before the date you would like to transplant them and when the threat of frost has passed.
Another benefit of growing vegetables from seed is the wide selection of varieties available from seed catalogs. Growing different varieties is important for an extended harvest and to find plants that grow well in your area. Vegetable plants sold in seedling form are generally available in only one or a few varieties. Plants typically started by seeds indoors include broccoli, cauliflower, eggplant, parsley, tomatoes and peppers. Seeds typically started in the ground include beans, beets, carrots, peas and turnips.
What do you need to get started?
- Soil mix - The soil media you choose should be fine textured, uniform and airy. Do not use garden soil. It is usually too heavy and often may have disease-causing organisms. A commercial potting mix suited to starting seeds will work well. Fill your growing containers about 2/3 full.
- Containers - You can start seeds in almost any container that has drainage holes. Sterilize recycled containers in a 1:9 bleach to water solution, rinse them well and let them air dry prior to use.
- A location with proper light and temperature - A sunny window is usually the perfect spot as it has strong but indirect sunlight. Seed packages should instruct you on sunlight needs. Additionally, keep your seedlings in an area that stays between 65 and 70 degrees during the day and 55-60 degrees at night.
- Quality Seeds – Only plant seeds from a reputable source. Check your seed packets to ensure your seeds have not expired, and that you are planting them at the right time of year. You can also check for seed viability.
- Water – It is crucial to provide seeds with consistent watering. Seeds and seedlings must be kept evenly moist to thrive.
Steps to starting your vegetable garden indoors
- It is important to follow the instructions on your seed packet. Refer to the seed packet for the proper planting depth, plant spacing, and days to maturity.
- Once you have planted your seeds, water them and continue to do so consistently. The goal is to keep the soil evenly moist but not overly wet.
- Two weeks before transplanting, or when your plants are two to four inches tall, expose them to outdoor temperatures to acclimate them. Do this by leaving them outside in a shady spot during the day for a week, and bringing them inside at night. The following week, leave them outside in their containers during the day and at night, gradually exposing them to more sunlight. This process is referred to as hardening off.
- Transplant your vegetables into the garden, planting them at their original depth. Tomatoes can be an exception to this rule however, so consider this tutorial before planting tomato seedlings. Be sure to handle seedlings with care.
Ask your local UC Master Gardener Program
Have a seed starting or home vegetable gardening question? UC Master Gardener volunteers are available to help. Click here to Find a Program and connect with your local UC Master Gardener Program. You will be redirected to your local county website and contact information. UC Master Gardener volunteers are available to help answer questions for FREE. Happy gardening!
- Author: Skylar Peters
Valentine's Day is just around the corner, and what better way to celebrate than to show your garden a little love? February means it is time to start planning and preparing your spring and summer garden. These gardening tips will help you get your garden ready for the spring growing season:
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Prune your roses. If you haven't already, cut back a third to half of their total height. Additionally, remove dead parts including old leaves on the bush and ground to improve overall plant health. Watch this video for more detail on how to prune roses.
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Fertilize your citrus trees. Most mature citrus require regular fertilization with nitrogen. Typically, most other nutrients are available in sufficient amounts in the soil. Nitrogen should be applied in January or February just prior to bloom. The second application can be applied in May and perhaps a third in June. Information about fertilizing citrus can be found on the UC Integrated Pest Management website.
Suggested application rates of nitrogen
Year one (1) | 1 tablespoon nitrogen fertilizer 3 times per year, per tree. |
Year two (2) | 0.25 lb. actual nitrogen per tree |
Year three (3) | 0.50 lb. actual nitrogen per tree |
Year four (4) | 0.75 lb. actual nitrogen per tree |
Year five (5+) | 1 lb. actual nitrogen each year |
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Plant these trees, shrubs, and perennials.
• Bare root deciduous shrubs and trees
• Roses, grapes, blackberries, raspberries, rhubarb, strawberries, asparagus, chives, onions, green onions.
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Plant cool-season crops like ... lettuce, spinach, and broccoli. These vegetables thrive in cooler temperatures and can be planted directly in the ground or started indoors for transplanting later.
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Start seeds indoors. Get a head start on your vegetable garden and consider starting seeds indoors in February. This will give your plants a jump start on the growing season and allow you to get a head start on your harvest. Here are a few seeds you can start now:
• Garlic
• Shallots
• Peas
• Peppers
• Sweet peas
• Tomatoes
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Protect your garden from snails and slugs. As the month progresses, you may start to see more snails in your garden. Make sure to remove them by hand-picking, baiting, or putting up barriers to keep snails and slugs out of your garden. Learn about snails and slug management from UC IPM.
February is a great time for gardeners in California to plan, prepare, and get an early start growing their gardens for the upcoming season. From planting cool-season vegetables to starting seeds indoors, to protecting your garden from pests, there are many ways to get a head start on your garden. So make the most of this month and show your love for your garden and your special someone on Valentine's Day.
Ask your local UC Master Gardener Program
Have a gardening question? UC Master Gardener volunteers are available to help. Click here to Find a Program and connect with your local UC Master Gardener Program. You will be redirected to your local county website and contact information. UC Master Gardener volunteers are available to help answer questions for FREE. Happy gardening!
- Author: Skylar Peters
Will you be participating in National Seed Swap Day this year? Seed swap day will take place on Saturday, January 28th, and is a reminder that spring is soon on its way! The first official seed swap day was held on Jan. 26, 2006, in Washington, DC. It was a day when gardeners, farmers, and plant enthusiasts came together to swap seeds from their best plants.
National Seed Swap Day is a great opportunity for people to share their favorite varieties of seeds, as well as to try out new varieties that they may not have had access to before. Collecting and exchanging seeds has many benefits ranging from preserving rare, heirloom varieties to saving money on seeds. Not to mention that the exchange of seeds perpetuates and improves biodiversity and promotes the ultimate form of recycling within your local area.
All gardeners ranging from novices to horticulture experts can benefit from the long-honored practice and tradition of seed swapping.
There are a variety of ways to swap seeds. Here are some suggestions:
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Check to see if your local library has a seed library.
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Find local seed swap groups on social media.
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Have a seed swap party with friends and neighbors. Everyone can bring their excess seeds to swap.
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Support your local seed library with seed or financial donations.
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Spread awareness about seed swapping by posting on social media.
Advice to Grow by… Ask Us!
UC Master Gardener volunteers are a great resource to connect with new and experienced gardeners for your vegetable gardening needs. From seed to harvesting your crops, the UC Master Garden Program has it covered. UC Master Gardeners are available in most counties to support your home gardening questions by e-mail, telephone, or ZOOM. In addition, UC Master Gardener Program public education events allow you to ask your questions face to face.
Click here to 'Find a Program' and be directed to your local county-based program. You will be redirected to your local county website and contact information.
/h3>- Author: Melissa G. Womack
- Author: Missy Gable
Proper irrigation and drainage are critically important for the health of plants and trees. But what happens when Mother Nature throws an atmospheric river curveball, and your yard or garden is now under water from heavy rains or floods?
Good garden soil contains a network of pore spaces filled with water and air. Both are necessary for healthy roots and beneficial soil-dwelling organisms. When the pore spaces fill with water, air is no longer available to the root system, and the roots become susceptible to root-rot organisms. Understanding the effects of flooding on plant health and caring for them after a flood event is important to saving your plants and garden.
Once the floodwaters have receded, assess the damage to your garden and begin the recovery process. There are a few things you can do to minimize the damage to your plants from flooding:
- Remove any debris, such as mud and silt, that may have shifted and accumulated on your plants.
- If the soil is waterlogged, improve drainage by digging ditches or furrows to redirect water away from plants.
- Check the soil for compaction and loosen it up with a garden fork. This will help to improve drainage and make it easier for water and nutrients to reach the roots of your plants.
- Wait until the soil dries out before working with it in order to reduce additional compaction. Avoid walking on waterlogged soil to prevent compaction and further root damage. Stay off a boggy lawn!
- Inspect your plants for damage to the roots, leaves, and stems. Remove any damaged parts, and prune your plants back to healthy growth if necessary.
- Remove contaminated material. Consider that any garden produce touched by floodwater may be contaminated and discard it. While the risk of contamination is low in residential areas, runoff from septic systems, pastures, or industrial areas can carry potentially harmful microbes and chemicals.
- Monitor your plants closely for signs of stress, such as wilting or discoloration, and address any issues that arise as soon as possible.
- Once dry, start to water your plants gently and gradually to help them acclimate to the new soil conditions.
Connect with us!
Recovering from a flood can be a difficult and time-consuming process, but with proper care and attention, your garden can recover and thrive. The UC Master Gardener Program is available to help! For gardening questions and local county resources, click here to Find a Program. You will be redirected to your local county website and contact information.
Source: Flood: Plant Stress in Extreme Wet Conditions, https://marinmg.ucanr.edu/PROBLEMS/EXTREME_CONDITIONS/Flood/
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