Posts Tagged: UC Master Gardener Program

Start seedlings for your spring-summer vegetable garden

Get a jump start on your spring-summer vegetable garden. Start growing seedlings indoors now to have young plants ready to go into the ground when the weather warms and there is no longer a threat of frost. Growing vegetables from seeds is a passion for many avid gardeners, but even a novice gardener can have fun and success with a little planning and effort.

While growing vegetables from seed requires a little bit of extra work, germinating your own seeds gives you access to a wider variety of vegetables than typically available from a local nursery. Many gardeners love experimenting by growing exotic or unusual flavors, colors, size or texture of their favorite edible.

What you will need: 

1. Seeds
   Growing healthy seedlings starts with healthy and high-quality seeds. Make sure to purchase seeds from a reputable supplier, and read the instructions and recommendations on the seed packets for specific planting instructions.
   
   Keep in mind that if you save seeds from your own garden, the plants they produce in the future may not be identical to their parents because they are a result of random open pollination. When saving your own seeds, clean and dry them and then place them in a container that will keep them dry. Store seeds in a cool location. 
   
   
2. Germination mix
   To start your seeds off right do not use garden soil or potting mix. Potting or garden soil it is too heavy, not sterile and does not drain well. It is recommended to use a germination mix that is a combination of one-third sterilized sand, one-third vermiculite and one-third peat moss which allows for air to circulate and is able to hold moisture, but still drains well. 
   
   
3. Container
   There are a variety of container options available for purchase, including flats or trays with dividers, or you can use small individual clay or plastic pots. It is also possible to use recycled items found around the house, like milk cartons, toilet or paper towel rolls, and plastic containers from yogurt to name a few. It is important to wash all containers thoroughly and soak and rinse in a solution of 1 part chlorine bleach to 9 parts water, to help prevent diseases from occurring to your delicate seedlings.
    
   
   

   Don't forget to label your seedlings, for proper space planning when transplanting. (Photo credit: Morguefiles.com)
4. Light source
   Edible plant seedlings typically need a bright light source to develop into healthy plants. Oftentimes, indoor seed germination requires more lighting than what is available from a large window. When more light is needed, suspend fluorescent lights 6 to 12 inches above the seeds for approximately 16 hours per day. After the seeds have germinated, move the seedlings to a cool, south facing window with plenty of natural light. Check seed packets for specific germination tips for individual species. 
   
   
5. Heat source
   Most seeds have a minimum and maximum optimal temperature at which they germinate, check seed packets or catalog for recommended germination temperatures. Temperature is extremely important in having the highest germination success (see table). Most edible plants germinate faster in warm soil (75°-85°F), to provide a consistent heat source a heating mat can be used. Once seeds have sprouted the seedlings prefer slightly cooler temperatures so a heating mat is no longer needed. 
   
   Soil temperature conditions for vegetable seed germination, from the California Master Gardener Handbook (table 5.2): 
   
   
   
6. Water
   Germination begins with the seed absorbing water. An adequate, continuous supply of water is needed to ensure successful germination. Once the germination process has begun try and avoid any dry or overly wet periods that may cause the young seedling to die.
   
   After experiencing the wonder of watching a seed turn into a mature seedling it is time to transplant. To transplant, carefully dig out and lift the small plant out of its container. Prepare its new desired location by making a hole the same size and depth as where the seedling was growing, once placed firm the soil and gently water. When possible keep the newly transplanted seedling out of direct sun and heat for a few days. 

 

Learn more with the UC Master Gardener Program

Interested in learning more about how to start seedlings or how to grow an edible garden? The UC Master Gardener Program has University-trained volunteers who are eager to help. Volunteers are available to answer questions about preparing your soil, fertilizing, mulching and more. With local programs based in more than 50 counties across California there is sure to be a workshop or class near you. Visit our website to find your local UC Master Gardener Program, mg.ucanr.edu.

Resources: 

California Master Gardener Handbook, Plant Propagation, page 112-118, anrcatalog.ucanr.edu 
California Gardening Web, Vegetables & Sustainable, How do I start seeds indoors? 

Simple steps for preparing, caring for and harvesting a vegetable garden

Whether in containers, raised beds in your backyard or community garden space or integrated into your landscape, growing edibles can be a rewarding experience if done properly. Oftentimes it is easy for gardeners new to growing edibles to become frustrated and give up after one or two attempts because their experience was less than desirable or overwhelming.

There are several ways to overcome these gardening pitfalls to help ensure you have a successful warm-season vegetable gardening experience.

Plan, plan and stick with your vegetable garden plan!

Planning is a key component to having a successful vegetable garden, but is frequently forgotten or overlooked. Planning includes selecting an appropriate location for your garden, choosing the correct varieties of crops for your space and developing a garden plan for what you would like to grow.

When selecting a location it is important that the site receives at least eight hours of full sun, is close to a water source (hose, irrigation or hand-watering) and has good soil for optimal growth. Once you have an appropriate location picked out, creating a garden plan will help contribute to your growing success.

Too often the overall size of the garden area and the size of mature plants is not considered. Keep in mind a young plant can become established and quickly overtake a small garden lot, challenging or dominating other plants for resources.

“A well planned garden can provide fresh or preserved vegetables for use year-round. The plan should contain crops and amounts to be planted, dates of planting and estimated harvest, planting location for each crop, specific spacing between rows, and trellising or support required,” according to the California Master Gardener Handbook (see Figure 13.1 on Page 342).

Invest a little time and develop a detailed plan to help guide you on where, which type and how many plants you will need for your space. Your vegetable garden plan will keep you focused while shopping at your local nursery and prevent impulse buys of tempting transplants!

Caring for your vegetable garden

Irrigation is a key component in a successful vegetable garden. Consistent, deep and sufficient watering will produce better tasting and superior quality fruits and vegetables, especially during the hot summer months when it is easy for the soil to quickly dry out.  

“As a rule” the handbook says on Page 349, “it will be necessary to irrigate your vegetable garden one to three times a week in summer ... The frequency will be determined by the depth of crop roots, soil texture, and weather conditions. Wet the soil to just beyond the bottom of the root system at each watering.” 

Even in a time of drought, vegetable crops require the soil to remain moist during their crop cycle. Poor irrigation practices and infrequent watering will produce smaller yields and poor quality fruits and vegetables. 

Weed prevention and maintenance is an important piece in caring for your vegetable garden. Without monitoring and controlling weeds, your crops could quickly become overrun by these pesky unwanted plants. Apply a three- to four-inch layer of organic mulch to discourage the growth of weeds. Prevent weeds by hand-weeding before they become established and go to seed. The UC Integrated Pest Management (IPM) Program has detailed information available on its website about sustainable weed management in the home landscape.

Harvesting (and enjoying) your crop

After all of your hard work, time and dedication growing your warm-season fruits and vegetables remembering when to harvest can be just as important as growing them. UC Davis' Postharvest Technology Center has easy to navigate Produce Fact Sheets to help guide you on when to best harvest your crops.

“To get the most from your vegetables, harvest them when they are at the best stage for eating and store them under conditions that will keep them as close to garden-fresh as possible,” recommends The California Garden Web. “Vegetables will be crisper and cooler when harvested in the early morning.” (cagardenweb.ucanr.edu)

Once harvested don't forget to enjoy the fruits (and veggies) of your labor. Few experiences can compare with the gratification of eating homegrown fruits and vegetables for the first-time!

Learn more with UC Master Gardeners

Interested in learning more about how to grow a thriving edible garden or home landscape? The UC Master Gardener Program has University trained volunteers who are eager to help. Volunteers are available to answer questions about preparing your soil, fertilizing, mulching and more. With local programs based in more than 50 counties across California there is sure to be a workshop or class near you. Visit our website to find your local UC Master Gardener Program, mg.ucanr.edu.    

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