Planting for Drought Tolerance and Deer Resistance

Article By: Christie Mackison, Shooting Star Nursery

Destructive deer and hot, dry summers are two very common issues in the Rogue Valley. Drought tolerant and deer resistant plants are a good combination to aim for because the qualities in plants that repel deer can often be found in drought tolerant species- such as heavy oil content, textured or hairy foliage, strong odors, and tough, less succulent leaves. The key to keeping drought tolerant plants happy and more unpalatable to deer is to give them the habitat they are used to- so don’t water them every day just because its 90 degrees!

Drought Tolerant Plants:

No heavy fertilizing: Use only organic or slow release fertilizer if called for at time of planting. If the plants look yellow it is usually from too much water, not lack of fertilizer. Plus over fertilizing will attract deer.

Dedicate an area to drought tolerant plants: Don’t mix plants that need regular water with drought tolerant plants. Do not put them on the same irrigation system & timer or one group will suffer.

Do not over water! It’s best to plant drought tolerant plants in early spring or early fall so they can get established with the rains.

Once established many plants do not need summer water. They will only need an occasional deep soak.
Don’t plant them where they will get extra water from lawn areas or runoff from other irrigated areas.

Good drainage is usually essential but if you don’t have it, you’ll probably have to water even less.

How to get good drainage:

Mound up soil when making new beds or planting a new plant. Create a berm. Plant drought tolerant plants on a hillside or slope.

Mulch with at least a 1″ layer of 1/4-inch gravel to keep dirt from rotting the crown of plant, it helps retain moisture during heat and keep plant roots warmer in winter.

For clay soil amend with 1/4 inch gravel (sharp edge, no fines) and compost, it will help break down clay over time.

 How to water drought tolerant plants:

Observe:  Most plants need to dry out before the next watering- stick your finger a few inches into soil (well below mulch, which will feel dry), if it is cool and damp, don’t need to water yet.

Infrequent But Deep Soak: This trains plants to have deep roots, not shallow. Often a deep soak every 2 weeks in heat of summer is enough- easier to do with drip irrigation than sprinklers

Watering rule of thumb (depends on site and soil type):

1st year of planting water deeply once a week for first month of summer,
Then water once every 2 weeks for 2nd and 3rd month of summer
Water once a month the 2nd summer and don’t water again.

 How to find drought tolerant plants:

Look to natives they can tolerate summer drought and winter wet

Look to Mediterranean plants- they have a similar climate to the Rogue  Valley

Also cold hardy Australian and northern California plants,  and hardy desert plants/succulents.

Get help from your local nursery!- at Shooting Star Nursery we’ve talked to countless customers and worked in our own gardens and have seen what works here in the valley.

How to find deer resistant plants

Deer can be very neighborhood specific so look around your neighborhood. Drive or walk around heavy populated deer areas like Ashland, Jacksonville, and in the hills of east Medford. Observe what has been chewed.

Read lists, but be ready to experiment

Use Liquid Fence, Plantskydd, or similar product on all new plantings to discourage initial browsing.

Use cages around most new trees to prevent antler damage and new growth chewing.

Deer damage can depend on the time of year you plant- deer are especially hungry in fall and winter they can graze on almost anything.

Use poisonous, strongly scented or sharply textured plants (grasses, sometimes prickly/thorny textures, fuzzy/hairy leaves, pine needles, etc.)

Talk to your local nursery- we know from our experiences and those of our customers and landscapers what has worked and what hasn’t.

Pruning Roses   

Roses are pruned to encourage new growth and healthy flowers during the growing season.  The time to prune roses depends on the type of rose your pruning. Roses that flower once a season are pruned right after they flower.  Roses that flower throughout the season are pruned when buds start to swell and become green. In Southern Oregon, Zone 8, this is typically mid- February to early March .

By-pass pruner

Tools Needed:
1)   Good pair of leather gloves,
2)   Sharp By-pass garden pruner, (recommended)
3)   Possibly: a medium to larger tree pruner and a handheld pruning saw.
Having sharp tools is imperative for making good clean cuts on branches.  Also, it’s important to disinfect every tool between each rose, because tools can transfer disease and viruses to other plants if not disinfected properly.

Disinfecting Tools:
1)   Isopropyl alcohol (rubbing alcohol) is ideal for sanitizing pruning tools because the blades can be wiped, or dipped into it. Most rubbing alcohols contain 70% isopropyl alcohol, which can be used straight from the bottle.  Rubbing alcohol has a strong fumes, so avoid inhaling.

2)   A solution made of chlorine bleach can also be used as a disinfectant, but unlike alcohol, bleach must be diluted before using and blades must be soaked for 30 minutes for disinfection to really work.  To make a 10% bleach solution: mix one part bleach to nine parts of water. Remember to: avoid inhalation of fumes, wear rubber gloves to prevent contact with skin, and protect your clothing from the bleach and  bleach water. This bleach solution must be used within two hours of mixing, because it losses 50% of its effectiveness after two hours.  After soaking tools in bleach solution, rinse them with clean water to prevent corrosion, and wipe dry. Be aware that chlorine bleach it is not as effective against viruses as rubbing alcohol.

Steps to Pruning: 
1)  Start by removing dead and diseased canes; brown is dead, green is alive.
2)  Tip back brown stems until you see green in the cane.
3)  Remove all thin weak canes; if it’s thinner than a pencil remove it.
4)  Open up the center by taking out crossing branches. Branches that rub cause damage and encourage disease.
5)  Removing center canes allows air-flow which helps control diseases.

 Making the Cut:
Common practice is to make a slight 45-degree angle cut ¼-inch above an outward facing bud. Cutting to an outward facing bud encourages growth away from the center of the rose to provide better air-flow. An angled cut is said to allow moisture to run off the cut. While some rose growers say angled cuts are unnecessary, everyone agrees if the cut is too steep it weakens and/or damages the new bud, so cut at a “slight” angle.

Rose Structure:
The goal is to have an open structure with upward reaching branches in the shape of a vase.
How much  top pruning is done depends on the type of rose.  Typically, only 1/3 of the total height of a rose should be removed, unless an extremely neglected rose shrub needs hard pruning to reshape and repair. ( See examples of Hard, Moderate, Light Pruning in the drawing below)

Seal Cane Cuts:
Seal cut ends of all canes 3/16-inch diameter and larger with white Elmer’s multi-purpose glue, not school glue, or white water-base Tacky Glue, found in craft stores. This forms a barrier to deter cane boring insects from drilling into the pithy middle of rose canes, where they lay their eggs. In some cases, a boring insect can bore deep enough to kill the entire cane, and sometimes the whole rose bush.

Article By: Carlotta Lucas, Ashland Garden Club Member

Resource Article:
Barbara McMullen
Master Gardener OSU Extension

Drawings from Oregon State University webpage on Pruning Roses.  Rose Pruning: https://extension.oregonstate.edu/gardening/flowers-shrubs-trees/pruning-roses

Read more on Rose Borers: https://www.gardeningknowhow.com/ornamental/flowers/roses/controlling-rose-cane-borers.htm

Resolutions for Gardeners

Good read!

Article by Kier Holmes for Sunset Magazine

10 New Year’s Resolutions for the Gardener

I really like #10 – Increase Gratitude: “…spend more time mingling with and appreciating the flora and fauna…”

https://www.sunset.com/home-garden/garden-basics/growing-gardens#non-toxic-garden-resolution

Home Remedy

Aphid Control

Pour 2 tablespoons liquid dish soap into 1 gallon water. Stir the dish soap into the water and transfer the contents into a plastic spray bottle.

Spray the affected plant’s leaves on both sides with the soapy mixture. Pay attention to coat the underside of the leaves with the mixture, as this is where you’ll find the highest concentration of aphids.

Spray the soapy mixture directly onto any aphids you notice falling from the leaves. The aphids are small, and it’s necessary to shoot them with the soapy water to kill the unwanted pests.

Rinse away the soapy residue after one to two hours. Allowing the soap to remain on the leaves for longer than a few hours can cause damage and burning. Use a garden hose or spray bottle filled with plain water to remove the residue.

Reapply the mixture every few days, or as necessary, to keep the aphid infestation under control.

Tip:  Add 1 teaspoon vegetable oil to the mixture to increase the mixture’s density and make it stickier, helping it attach to and kill the aphids more effectively.

Warning: Test the soapy mixture on a small leaf before a larger application. If the plant shows sign of wilting or damage, don’t use this mixture.

Reprinted from SFgate online:   http://www.sfgate.com/homeandgarden

Sow Right!

Spring is here, can I plant my seeds?

seed packet001

Fordhook Zucchini

Planting vegetable seeds depends on your last
average frost date and the temperature of your soil.

Your growing season,  which is determined by first frost (fall) and last frost (spring),  is the amount of time vegetables in your garden have to ripen before a fall frost.

For example:  Medford, Oregon, Zone 8a, Average Frost Dates  Spring 4/25, Fall 10/20. Average growing season 6 months
but Ashland, only 11 mile away…
Ashland, Oregon Zone 7b,                         Average Frost Date Spring  5/15, Fall 10/15. Average growing season  5 months

Check your local Extension Service for frost dates and USDA Zone.
Each zone has different planting schedules for different plants and your local extension service will have this information – often it’s online.  Then check the back of your seed packets. It tells you when to direct sow and days to harvest.

Check Page 7 of the Oregon State University pamphlet Growing Your Own for “Dates for planting vegetables in Oregon”. It’s a very handy booklet.
OSU Booklet_Growing Your Own

Soil Temperatures for Germination:  Soil Temps PDF

 

 

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