Category Archives: organic fertilizers

Tips for Vegetables, Pests and Plants with Bad Behaviors

Summer is officially almost here although we all know it actually starts on Memorial Day weekend. What fun stuff should we be doing in the garden? What problems should I be on the lookout for? What troublemakers should I avoid planting?

June is a busy time for plants. Some are just finishing up early spring flowering like rhododendrons, azaleas. camellias, lilac and wisteria. Prune off spent flowers and shape plants if needed. Other plants are just beginning to flower and would like a dose of organic fertilizer to really perform well.

Plant corn, lettuce and basil continuously to keep a steady supply. Speaking of basil, if yours died recently showing brown spots or streaks up the stem,  fusarium wilt, caused by a fungus, is the culprit. Carried by either the soil that affected basil plants have been grown in or by seed from an infected basil plant it's a common problem. There is no remedy for fusarium wilt. Destroy infected plants and do not plant basil or other mint plants in that area for 2-3 years.

Night time temperatures should be consistently above 50 degrees for basil. As long as you provide it with a hot, sunny location and plenty of water, it's among the easiest of herbs to grow in the garden or in a container. Steady, slow growth is the key to good taste, so amend the soil with compost and forgo the fertilizer. Basil contains the most oils when harvested before the flowers occur. The best way to delay flowering, as well as to encourage branching and new growth, is to harvest regularly by snipping of the end of the branches.

The best time to harvest is midmorning, right after the dew has dried, but before the afternoon sun bakes out the oils. At some point later in the summer, flowering will begin in earnest. Then it's time to harvest the entire crop, as flavor will go downhill soon afterward.

Insects are having a field day at this time of year, too. Put out wet rolled newspaper at night to collect earwigs in the morning. If you see notches on your rose leaves, it's the work of leaf cutter bees. These guys are beneficial and will go away shortly.

If your rose leaves look like lace then you have the dreaded rose slug. I have a friend who's rose shrubs were really hit by these. It's discouraging when you had visions of huge fragrant bouquets on every table. What to do?

The rose slug is actually the larvae of a wasp called a sawfly. Because they may have 6 generations per year they can do a lot of damage to your roses. Early detection is key. Start scouting for sawfly larvae in early May when they can be hand picked or washed from the leaves with a strong spray. If needed, spray the leaves with neem oil while the larvae are still small. Conventional insecticides are toxic to bees and kill the good bugs too.

During the winter they pupate in the soil and removing a couple of inches will help with controlling their numbers. Even cultivating the soil at any time will break up the cocoons.

Finally, think twice before planting rampant growers that are hard to control unless you use a deep edging that will keep them confined where you want. There's nothing wrong with a plant that spreads out in the right places, but let it overgrow that area and it quickly wears out its welcome.

Plants like chameleon plant ( Houttunyia cordata) , lamium, it's close relative lamiastrum and hypericum are  great plants in areas that are not close to your other planting beds. The deceptively delicate looking and impossible to ever get rid of Japanese anemone falls into this category also. To be forewarned is to be forearmed. Plan ahead.

Get out and enjoy your garden. The best way to nip problems in the bud is to walk around your garden with a beverage of some kind and just look.

 

February To-Do’s for the Santa Cruz Mountains

Seems to me that I'm still waiting for winter to start. I look hopefully each week at the weather forecast hoping to see a storm developing. The birds in my garden are already starting to pair up, however, and call to each other. They know  a new season has begun. So, as promised, at the beginning of each month, here's your to-do list of what you should be doing in the garden.

Each year the weather is a little different requiring some tasks to be done earlier in the month when it's been a warm winter while giving you a little extra time when it's been cold. This year we've experienced very cold nights since December so plants are still mostly dormant but spring is coming. Be prepared.

Cut back woody shrubs. To stimulate lush new growth on plants like Mexican bush sage, artemisia and butterfly bush cut back to within a few inches of the ground. Don't use this approach on lavender or ceanothus – only lightly prune them after blooming. Prune frost  damaged shrubs if you can tell how far down the die back goes otherwise wait until growth starts in the spring. Prune fuchsias back by a third and remove dead, crossing branches and interior twiggy growth. Container fuchsias can be cut back to the pot rim. Revitalize overgrown or leggy hedges by cutting back plants just before the flush of new spring growth.

Cut back ornamental grasses to within 3-6" of the ground. If  you get very heavy frost in your yard wait until the end of the month. Grass-like plants like Japanese forest grass should have all the old blades pruned off, too. You can divide them, if needed, after pruning to increase the number of plants you have.

Divide perennials before new growth starts. Agapanthus, asters, coreopsis, daylilies, shasta daisy and liriope are plants that tend to become overcrowded and benefit from dividing.

Prune established perennials later in the month if you get frost that may damage new foliage. Giving your maiden hair ferns a haircut now allows the new growth to come out fresh. Prune winter damaged fronds from your other ferns.

Begin sowing seeds of cool season vegetables outdoors. If it's been raining, allow the ground to dry out for several days before working the soil. Plant seeds of beets, carrots, chard, lettuce, peas, spinach, arugula, chives kale and parley directly in the ground. Later in the month start broccoli, cabbage and cauliflower. You can also plant starts of many of these vegetables and that stir fry will be on your table even sooner. Indoors, start seeds of tomatoes, peppers and eggplant so they will be ready to transplant outdoors in 8 weeks when danger of frost is past and the soil has started to warm up.

Fertilize perennials, shrubs and trees their first dose of organic all-purpose fertilizer for the season. Wait to feed azaleas, camellias and rhododendrons until the last flower buds start to open. Roses will get a high nitrogen fertilizer to give foliage a boost and later next month, I'll feed with a high phosphorus fertilizer to encourage blooms.

Feed chelated iron to azaleas, citrus and gardenias to green up their leaves. Cool soil makes the leaves of these plants yellow this time of year.  

Apply the last application of dormant spray. Spray with horticultural oil, lime sulfur, liquid sulfur or copper dormant spray. Do not spray 36 hours before rain is predicted. Be sure to spray the ground around each tree.
 

Bare Root for the Santa Cruz mountains – part deux

There are few things in life that are as optimistic as planting a fruit tree. Knowing your new apple tree might survive for 80 years and a pear tree up to 40 years makes your job as steward take on more importance. So it's a good idea to do some planning on where and how you plant your new addition.

First of all, consider how your soil drains. Many fruit trees are forgiving as long as they're not sitting for days at a time in water logged soil. Moist is fine but if you dig your hole, fill it with water and it doesn't drain in a day or less then consider planting on mounds. Cherries especially need good drainage with apricots being close behind.

Choose fruit trees that ripen at different times. You don't want so much fruit in July that you're begging people to take it or leaving it on their doorstep and running like the zucchini people. Some fruit trees need a pollenizer to bear fruit so keep this in mind and ask  when you buy your tee. These are just a few suggestions. Let your taste buds be your guide.  
 
Take a look around your property for spots where there is  enough sun in the growing season to make  your new plant  or tree happy. Don't worry if you don't have much sun in the winter time,  the plants are dormant then anyway. It's the growing season, from approximately April to September, when your site should get 5-6 hours minimum of sun.

How much space do you need? Trees come in different mature sizes. Room is not so much a factor as you can find dwarf and semi-dwarf varieties if need be. Nut trees are the exception and do require more space. There are fruit trees available also that have already been espaliered to grow flat against a fence or wall. Plus a fruit tree can serve double duty as a focal point or shade tree if it is limbed up enough to walk under.  Semi-Dwarf trees are 2/3 the size of a regular tree (15-20ft typically although you can prune a little in the summer to keep them shorter) .  This is the most popular size as pruning and harvesting are within reach of medium size ladders. There are many dwarf varieties of peaches, nectarines, apples, almonds, cherries also available that range in size from 6 ft. – 12 ft.

Selecting a more mature bareroot tree will give you fruit  sooner than one that has a trunk of only 1/2 inch across.  
Trunk caliper of 5/8 inch is a good size. If you are planting a home orchard it may be more economical to buy smaller sizes but you'll have to be patient for your first harvest. Dreaming about that row of flowering cherries or plums bordering the sides of your driveway?  You'll realize that vision sooner by going with the larger trees.
 
So you've chosen your dream tree, it's wrapped in a plastic bag to transport home without drying the roots, you've dug a hole large enough to accommodate the roots, amended the soil if necessary and pruned off any damaged roots. Now what? Find the graft at the tree's base and make sure when you fill in the hole with soil that the graft is above grade. Make a watering ring around the tree and flood it with water settling in the roots and eliminating air pockets. Don't water again until the soil is dry an inch or two down.  Winter rains may take care of this for you for a long time. Cherries and apricots need excellent drainage and may need to plant them on a mound to ensure this. If you can't plant your new tree, shrub, berry  or rose right away be sure to cover the roots with moist soil.

Only stake your new tree if you live in a windy area. A trunk will attain a larger diameter if it's allowed to move slighly in the wind. Usually it's not necessary to prune a young tree much while it is trying to grow new roots. Trimming a long branch or leader by a third is OK if necessary. You can start limbing up after a couple of years if you wish.

Add both edibles and ornamentals to your garden. You'll be investing in the future.  Blueberries offer more than yummy berries to eat.  They make beautiful hedges with gorgeous fall color.  Include two types for better production like a Berkeley, Bluecrop or Blueray.   Other edibles that are available now are asparagus, artichokes, strawberries, grapes, blackberries, boysenberries and raspberries.  

Plant something new while it's available bare root.  You won't be disappointed.