Category Archives: fertilizing

March Gardening Tips

The rain last week was welcomed by all of us who like to watch things grow. There's a patch of grass growing beside a creek where I live that is the brightest neon green I've ever seen. Whether you call it apple green or lime green or chartreuse it shouts spring officially started on March 20th, the vernal equinox.

Spring weather here in the Santa Cruz Mountains can be warm and sunny one day, gray and rainy the next. Strong winds often blow last years crop of oak leaves all over the deck you've just swept but none of us would  live anywhere else.

Now that daylight savings time has started we have more time to spend out in the garden. One simple addition that makes being outside in the cooler evenings more enjoyable is a fire pit. For ideas search Google images to be inspired. You can install a simple metal fire pit for burning wood or get fancy with a stone pit surrounded with gravel and stone seat walls. I guarantee you'll be happy you set aside a space for this addition to your garden.

What other to-do's are there in the garden in March?

Fertilize – Take advantage of the moist soil to fertilize your garden.  Lawns and groundcovers are beginning their spring growth spurt and new leaves on trees, shrubs and perennials are starting to emerge. Spread compost, manure, or organic fertilizer to help plants get off to a strong start. Your citrus may be looking yellow from lack of nitrogen which has leached out of the soil through the rainy season and they may be lacking in iron.  Feed them with citrus and fruit tree fertilizer. I like to put out a granular or time release fetilizer before a storm and let the rains water it in for me.  Make sure you keep fertilizer off the foliage and crown of the plants. Wait to feed azaleas, camellias and rhododendrons until after they bloom.

Prune – Clean up winter damage on perennials, vines and shrubs.

Transplant –  If you need to move any plants in the garden, now is a good time.  Plants are full of growth hormones and recover quickly from transplant shock.

Divide perennials –  To increase your plantings, lift and divide black-eyed Susan, gaillardia, catmint, coreopsis, daylily, diascia, geranium, ground morning glory, lamb's ears, penstemon, shasta daisy, society garlic and yarrow.  Also I see my hostas are just beginning to come up so dividing them or transplanting them at this time is easy and you don't risk ruining their georgous leaves later after they unfurl.

Weed – Pull weeds regularly before they set seed. They pull out easily from moist soil. Think of weeding as free gym time.

Houseplants – Now that the days are getting longer and temperatures are inching up your houseplants can be repotted if roots are poking out of the bottom or are matted on the surface.  Houseplants rest in the winter and don't require much fertilizing.  You can resume feeding now with a balanced fertilizer. Your plants will benefit also from leaching the accumulated salts from the soil. Take them to the sink and run room temperature water through them several times.  Houseplants clean the air.

Our last estimated hard frost of the season is approximately March 15th. Sometimes we get light frosts into April so have frost blankets or any blanket or towel ready to protect seedlings. Even a cardboard box over frost tender new growth will work fine.

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.
 

January To-Do’s for the Santa Cruz Mtns

A new year in the garden. I'm already starting to make journal entries for January. Not much to shout about in the weather department. We've had dry Decembers before but if January turns out to be the start of 6 weeks of Caribbean-like weather like last year we'll never catch up.

The weather affects how things grow as much as the soil that plants grow in. Remember the cool spring and summer we had while you waited for your tomatoes to ripen? I was just looking at the weather forecasts for 2010 that the Farmer's Almanac predicted. Last May when I first wrote about them they were way off for the first half of the year and at best were hit and miss for the latter half. October did bring rain for us as predicted but they hedged their bets for November calling for "bands of showers" off and on during the month. December for us brought lots of frost and a heavy wind storm.  Although the frost was predicted by the Almanac, I didn't see any "light to moderate rainfall" in December. I put my trust in the satellite map, internet weather sites and my own common sense to judge when to start planting, pruning and transplanting for the season.

This year I'm going to start off right by noting on my calendar at the beginning of each month just what I need to do to ensure a happy, healthy garden.

Here are the tasks to do in the garden in January:

  • Plan for spring. Bareroot fruit, nut, berry and ornamental season runs through the end of February. Don't miss this inexpensive way to add to your edible garden or your landscape.
  • Cut back hydrangeas if you haven't already done so. Apply soil sulfur, aluminum sulfate or other acidifier if you want to encourage blue flowers. You must do this before they set flower buds or it won't help.
  • Prune fruit, nut and shade trees and spray with horticultural oil, lime sulfur, liquid sulfur or copper dormant spray. You should get one more spraying in about Valentine's Day. This is actually the most important one as it's just before bud break. Don't use lime-sulfer on apricots, though.
  • Cut back summer flowering deciduous shrubs and vines.  Don't prune spring flowering varieties like lilac, flowering cherry, plum and crabapple, rhododendrons, azaleas, camellias, weigela and spirea until after flowering but you can cut some during flowering to bring in for bouquets.
  • Control overgrown honeysuckle, potato vine, morning glory, trumpet creeper and pink jasmine by thinning now or even cutting back low to the ground if  they are a big tangled mess.
  • Prune roses towards the end of the month. I'll tell you how to do this later but it's not as hard as it sounds.
  • Bait for slugs and snails

And here are the tasks you should not do in January:

  • Don't cut back grasses yet if you get frost in the area where they grow.
  • Wait to prune back perennials that may have their new foliage damaged in a late frost
  • Wait until February to prune frost  damaged shrubs  if you can tell how far down the die back goes otherwise wait until growth starts in the spring.
  • Wait to prune fuchsias and other perennials until February.
  • Don't fertilize houseplants until March. Because they are resting at this time of year, they use little water.  Don't overwater.  Be sure they are dry before watering.

As always, if you have any questions, feel free to email me. I'd love to hear from you.