Healthy Plants: Q&A from Mr Booster

How to get Canistel tree to produce
without dropping flowers and fruit

Q: My Canistel tree is 3 1/2 years old and is growing very well, see the picture below. It gets hundreds of pea sized "berries" but then they fall off. No canistel fruit. What's wrong?

A: You have such a nice looking tree, it is a shame you can't get any fruit to ripen.
In our experience, Pouteria trees dropping fruit prematurely is a very common problem. There may be one of the following reasons, or a combination of them:
- Cold winters may affect production, and while Canistel is generally pretty hardy tropical plant that can easily withstand short periods of chill, the fruit may never form properly if it had a cold winter.
- Lack of water. Canistel tree is pretty drought tolerant, but for the proper production cycle it needs regular irrigation. Especially during hot summer.
- The tree may be not strong enough; young trees drop fruit very often when they don't have enough "fruiting energy" built up in their system.
Your tree looks well established and vigorous, however, flower/fruit drop is often a sign of insufficient nutrients of particular kind, usually Boron (B) and/or Molybdenum (Mo): either when a tree is too young and not strong enough, or because of poor soils and lack of necessary elements.

Here is what can be done, considering you live in a warm, frost-free climate.

1. Provide regular fertilizing program. We recommend liquid fertilizers Sunshine Boosters that are safe to use with every watering and year around. It is beneficial to switch plants from traditional "slow-release" fertilizer to the liquid one because it makes a huge difference in plant growth and flower/fruit quality and quantity. See also:
- Why liquid fertilizers are better than dry
- Article about benefits of liquid fertilizers.

Use this plant food for your Canistel tree:
SUNSHINE C-Cibus - Crop Nutrition Booster

2. Apply micro-element remedies that are very effective for improving fruit production, especially when flower or fruit drop occurs:

SUNSHINE Honey - promotes more efficient blossoming and pollination, makes flowers bigger and reduces bud drop.
SUNSHINE SuperFood - improves plant vigor and quality and size of flowers These are all natural, eco-friendly supplements that work great for fruit trees and other edibles.

Care of Desert Roses

Q: I am looking forward to my three desert roses I just ordered from you and I am wondering how to take care of them, especially during winter time. Should I put the pots in full sun or shade? What kind of soil do they like? How often should I water them? When it gets cooler, should I bring them inside? We do have occasional frost here during winter.

A: Here are a few tips for your desert roses:

1. When received Adenium from mail-order, unpack carefully; branches are fragile. Plant in well-drained potting mix. Cactus mix will do, but we recommend special Adenium mix. If using regular acidic peat-based potting mix, you may add sea-shells on top of soil to neutralize acidity: adeniums prefer alkaline soils. Using clay pots is beneficial. Water once and do not water again until soil gets dry. Place in bright shade until new leaves sprout, then the plant can be moved to full sun.

2. Adenium is a succulent, but not a cactus. It needs watering, however let soil dry before waterings. Reduce watering during cool season and discontinue when plant gets dormant (drops all leaves in winter).

3. Bright light is the best for profuse flowering. However, adeniums look much healthier in slightly filtered light rather than in all-day full sun.

4. Fertilize and spray leaves with liquid fertilizer SUNSHINE Megaflor - Nutrition Bloom Booster. Phosphorous is responsible both for flowering and caudex development. Avoid caudex, spray over foliage only. Dry fertilizer can be used only during hot months.

5. Watch for spider mites during hot and dry season.

6. Give plants a break during winter dormant season. Keep in bright shade and reduce watering to 1-2 per month or stop watering if temperature is below 65F.

More info on growing Desert Roses:
What you need for successful growing Adeniums
Overwintering Adeniums outside of tropics
Growing Exotic Adeniums - Growing Exotic Adeniums

Healthy Plant Food: Q&A from Mr Booster

Encouraging blooms on the Hawaiian Sunset Bell Vine

Q: Please can you advise how to encourage the Stictocardia beraviensis the Hawaiian Sunset Bell vine blooms? Mine is all beautiful leaves and full sun in Miami.

A: Providing full sun, Stictocardia blooms profusely. In your area, it should be happy and thriving. However, keep in mind that these flowers can be seasonal (meaning, not ever-blooming). The good news it, Hawaiian Sunset Bell usually blooms several times a year on and off. In our garden, we have a large plant growing in the ground and covering a whole fence; we see flowers 3 times a year:
- Early Spring
- Summer (sporadically)
- Late Fall to early Winter

Make sure to provide proper fertilizer to encourage blooms. It is especially important if you grow this plant in container (where nutrients are very limited). We suggest the following fertilizer for your Stictocardia:

SUNSHINE Megaflor - Bloom Nutrition Booster

Healthy Plant Food

Establishing Avocado Tree

Q: I received my avocado Wurtz tree yesterday. Per instructions I have put the tree in a pot first. However I am having difficulty deciding what to trim off. Yesterday I removed obvious damaged leaves. However as you can see, the leaves are lighter in some areas and contain yellow and red in some spots. What would you advise? Given this is a critical state as I do not want to shock the tree after the trip, I would like to do everything possible to protect it and ensure viability.

A: Your Avocado tree looks great and healthy overall. You've done excellent job planting it. Wurtz is a good, vigorous variety, while the tree is somewhat dwarf, great for containers.
You are right, it is the best for the tree to leave it alone and do not trim or remove leaves any more, until it starts showing new growth. Then it will be obvious what needs to be trimmed. Reddish/orange color of young leaves is normal. If any spots or dots - no need to remove those leaves yet. Wait until the plant grows more leaves. It needs them for photosynthesis, in order to become stronger.

Keep the tree in bright shade and gradually move from filtered sun to full sun. Water daily. Within a week or two after planting, you can start applying mild fertilizer and micro-elements. We recommend at this growth stage:
SUNSHINE C-Cibus - Crop Nutrition Booster
SUNSHINE SuperFood - Micro-element Plant Booster