Convolvulaceae (Calystegia)

Protocol Information for:

Label_title:
Calystegia (macrostegia)

Family Names:

Family Scientific Name:
Convolvulaceae

Family Common Name:
Morning Glory Family

Scientific Names:

Genus:
Calystegia

Species:
macrostegia

Scientific Classification:

Scientific SubSpecies:

Species Authority:
(Greene) Brummitt

Scientific SubAuthority:

Authors:

Common Synonym:

Genus:

Species:

Synonym Classification:

Synonym SubSpecies:

Species Authority:

Synonym SubAuthority:

Other Information:

Common Name:
Island Morning Glory

Species Code:
CALMAC

Ecotype:
Catalina Island, California

General Distribution:
Island Morning Glory is a Channel islands endemic that is found in rocky places and canyon walls. On Catalina Island, it typically occurs in chaparral or coastal sage shrub communities.
There are 3 subspeccies found on Catalina Island: ssp. cyclostegia, intermedia, and macrostegia.

Known Invasiveness:

Propagation Goal:
plants

Propagation Method:
seed

Product Type:
Container (plug)

Stock Type:
1 gallon treepot

Grow Time:
0

Target Specifications:
Height: N/A
Caliper: N/A
Root System: Firm root plug in container.

Propagation Collection:
Seeds are hand collected when seed capsules have fully matured. We have collected capsules in late July.

Propagation Processing/Propagule Characteristics:
Fruits dry in paper bags in a warm, dry room. We clean the seeds by using a seed blower set at 50 to 60 settings to separate chaff and non-viable seeds.
After seeds have been cleaned, they are stored under refrigeration in air tight glass containers at 40 F and 40% RH.
With 2 collections, seeds weigh an average of 1.29 grams per 90 seeds.

Pre-Planting Propagule Treatments:
We soak seeds in warm water for 2 hours and/or place them into a 5% bleach solution for 3 minutes. Floaters are removed from sinkers during water soak. We have found that floaters are non-viable.

Growing Area Preparation / Annual Practices for Perennial Crops:
The James H. Ackerman Native Plant Nursery is located on Catalina Island off the coast of southern California. From 1993 to 2004, the average maximum and minimum temperatures have been 75.4 F and 46 F, with an average of 361 frost free days per year and annual rainfall of 14 inches.
The facility is comprised of shade houses, mist propagation house, and an outdoor growing compound. All propagation environments are utilized at different stages of seedling growth to provide for the variance in temperature and shading requirements needed during the growing season. We irrigate all containers with an overhead emitter system in the shadehouses and use a drip system or hand water in the outdoor nursery.

Establishment Phase:
Seeds are sown in late fall (November) and placed in a shadehouse were they remain for several weeks. Flats or containers are filled with a 1 inch layer of special seed germination mix of 1:1 (v:v) Sunshine Professional Growing Mix and sand on top of 4:1:1 (v:v:v) peat, perlite, and organic compost. We incorporate Osmocote time release fertilizer (9 month release rate) (14 N:14P2O5:14K2O) at the rate of « cup per 0.75 cubic yard of medium. Seeded flats are watered with an overhead emitter system as needed.

Length of Establishment Phase:
3 to 4 months

Active Growth Phase:
After seedlings are well established, they are transplanted into #1 treepots (173 cubic inches)filled with a growing medium of 4:1:1 (v:v:v) peat, perlite, and organic compost. Osmocote time release fertilizer (9 mo release rate) (14 N:14P2O5:14K2O) is incorporated into the medium at a rate of of « cup per .75 cubic yards of medium.

Length of Active Growth Phase:

Hardening Phase:
Any nursery stock grown under shadehouse conditions are hardened by placing them in full sun exposure for a minimum of 2 weeks prior to outplanting.

Length of Hardening Phase:
2 to 4 months

Harvesting, Storage and Shipping:
Containerized seedlings are over wintered directly in the open growing compound.

Length of Storage:
Variable; depends on out planting date.

Guidelines for Outplanting / Performance on Typical Sites:

Other Comments:

References:

Citation:
Herrera, Mike; Takara, Janet. 2006. Propagation protocol for production of Container (plug) Calystegia macrostegia (Greene) Brummitt plants 1 gallon treepot; Catalina Island Conservancy Avalon, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/30). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

Personal tools